HTMX + Deps Update

go.mod

@@ -3,7 +3,7 @@ module goth.stack
 go 1.23
 
 require (
-	github.com/alecthomas/chroma/v2 v2.14.0
+	github.com/alecthomas/chroma/v2 v2.15.0
 	github.com/swaggo/echo-swagger v1.4.1
 	github.com/swaggo/swag v1.16.4
 	golang.org/x/image v0.23.0
@@ -21,14 +21,14 @@ require (
 	github.com/labstack/gommon v0.4.2 // indirect
 	github.com/mailru/easyjson v0.9.0 // indirect
 	github.com/rogpeppe/go-internal v1.12.0 // indirect
-	github.com/swaggo/files/v2 v2.0.1 // indirect
+	github.com/swaggo/files/v2 v2.0.2 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
-	golang.org/x/net v0.33.0 // indirect
+	golang.org/x/net v0.34.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
-	golang.org/x/time v0.8.0 // indirect
+	golang.org/x/time v0.9.0 // indirect
-	golang.org/x/tools v0.28.0 // indirect
+	golang.org/x/tools v0.29.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
@@ -36,12 +36,12 @@ require (
 	github.com/gookit/color v1.5.4
 	github.com/gorilla/feeds v1.2.0
 	github.com/joho/godotenv v1.5.1
-	github.com/labstack/echo/v4 v4.13.2
+	github.com/labstack/echo/v4 v4.13.3
-	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/yuin/goldmark v1.7.8
 	github.com/yuin/goldmark-highlighting/v2 v2.0.0-20230729083705-37449abec8cc
-	golang.org/x/crypto v0.31.0 // indirect
+	golang.org/x/crypto v0.32.0 // indirect
-	golang.org/x/sys v0.28.0 // indirect
+	golang.org/x/sys v0.29.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0
 )

go.sum

@@ -1,10 +1,10 @@
 github.com/KyleBanks/depth v1.2.1 h1:5h8fQADFrWtarTdtDudMmGsC7GPbOAu6RVB3ffsVFHc=
 github.com/KyleBanks/depth v1.2.1/go.mod h1:jzSb9d0L43HxTQfT+oSA1EEp2q+ne2uh6XgeJcm8brE=
-github.com/alecthomas/assert/v2 v2.7.0 h1:QtqSACNS3tF7oasA8CU6A6sXZSBDqnm7RfpLl9bZqbE=
+github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8vS6K3D0=
-github.com/alecthomas/assert/v2 v2.7.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
+github.com/alecthomas/assert/v2 v2.11.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
 github.com/alecthomas/chroma/v2 v2.2.0/go.mod h1:vf4zrexSH54oEjJ7EdB65tGNHmH3pGZmVkgTP5RHvAs=
-github.com/alecthomas/chroma/v2 v2.14.0 h1:R3+wzpnUArGcQz7fCETQBzO5n9IMNi13iIs46aU4V9E=
+github.com/alecthomas/chroma/v2 v2.15.0 h1:LxXTQHFoYrstG2nnV9y2X5O94sOBzf0CIUpSTbpxvMc=
-github.com/alecthomas/chroma/v2 v2.14.0/go.mod h1:QolEbTfmUHIMVpBqxeDnNBj2uoeI4EbYP4i6n68SG4I=
+github.com/alecthomas/chroma/v2 v2.15.0/go.mod h1:gUhVLrPDXPtp/f+L1jo9xepo9gL4eLwRuGAunSZMkio=
 github.com/alecthomas/repr v0.0.0-20220113201626-b1b626ac65ae/go.mod h1:2kn6fqh/zIyPLmm3ugklbEi5hg5wS435eygvNfaDQL8=
 github.com/alecthomas/repr v0.4.0 h1:GhI2A8MACjfegCPVq9f1FLvIBS+DrQ2KQBFZP1iFzXc=
 github.com/alecthomas/repr v0.4.0/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
@@ -39,15 +39,14 @@ github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/labstack/echo/v4 v4.13.2 h1:9aAt4hstpH54qIcqkuUXRLTf+v7yOTfMPWzDtuqLmtA=
+github.com/labstack/echo/v4 v4.13.3 h1:pwhpCPrTl5qry5HRdM5FwdXnhXSLSY+WE+YQSeCaafY=
-github.com/labstack/echo/v4 v4.13.2/go.mod h1:uc9gDtHB8UWt3FfbYx0HyxcCuvR4YuPYOxF/1QjoV/c=
+github.com/labstack/echo/v4 v4.13.3/go.mod h1:o90YNEeQWjDozo584l7AwhJMHN0bOC4tAfg+Xox9q5g=
 github.com/labstack/gommon v0.4.2 h1:F8qTUNXgG1+6WQmqoUWnz8WiEU60mXVVw0P4ht1WRA0=
 github.com/labstack/gommon v0.4.2/go.mod h1:QlUFxVM+SNXhDL/Z7YhocGIBYOiwB0mXm1+1bAPHPyU=
 github.com/mailru/easyjson v0.9.0 h1:PrnmzHw7262yW8sTBwxi1PdJA3Iw/EKBa8psRf7d9a4=
 github.com/mailru/easyjson v0.9.0/go.mod h1:1+xMtQp2MRNVL/V1bOzuP3aP8VNwRW55fQUto+XFtTU=
-github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
+github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE=
-github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
-github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -60,8 +59,8 @@ github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOf
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/swaggo/echo-swagger v1.4.1 h1:Yf0uPaJWp1uRtDloZALyLnvdBeoEL5Kc7DtnjzO/TUk=
 github.com/swaggo/echo-swagger v1.4.1/go.mod h1:C8bSi+9yH2FLZsnhqMZLIZddpUxZdBYuNHbtaS1Hljc=
-github.com/swaggo/files/v2 v2.0.1 h1:XCVJO/i/VosCDsJu1YLpdejGsGnBE9deRMpjN4pJLHk=
+github.com/swaggo/files/v2 v2.0.2 h1:Bq4tgS/yxLB/3nwOMcul5oLEUKa877Ykgz3CJMVbQKU=
-github.com/swaggo/files/v2 v2.0.1/go.mod h1:24kk2Y9NYEJ5lHuCra6iVwkMjIekMCaFq/0JQj66kyM=
+github.com/swaggo/files/v2 v2.0.2/go.mod h1:TVqetIzZsO9OhHX1Am9sRf9LdrFZqoK49N37KON/jr0=
 github.com/swaggo/swag v1.16.4 h1:clWJtd9LStiG3VeijiCfOVODP6VpHtKdQy9ELFG3s1A=
 github.com/swaggo/swag v1.16.4/go.mod h1:VBsHJRsDvfYvqoiMKnsdwhNV9LEMHgEDZcyVYX0sxPg=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
@@ -75,28 +74,27 @@ github.com/yuin/goldmark v1.7.8 h1:iERMLn0/QJeHFhxSt3p6PeN9mGnvIKSpG9YYorDMnic=
 github.com/yuin/goldmark v1.7.8/go.mod h1:uzxRWxtg69N339t3louHJ7+O03ezfj6PlliRlaOzY1E=
 github.com/yuin/goldmark-highlighting/v2 v2.0.0-20230729083705-37449abec8cc h1:+IAOyRda+RLrxa1WC7umKOZRsGq4QrFFMYApOeHzQwQ=
 github.com/yuin/goldmark-highlighting/v2 v2.0.0-20230729083705-37449abec8cc/go.mod h1:ovIvrum6DQJA4QsJSovrkC4saKHQVs7TvcaeO8AIl5I=
-golang.org/x/crypto v0.31.0 h1:ihbySMvVjLAeSH1IbfcRTkD/iNscyz8rGzjF/E5hV6U=
+golang.org/x/crypto v0.32.0 h1:euUpcYgM8WcP71gNpTqQCn6rC2t6ULUPiOzfWaXVVfc=
-golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
+golang.org/x/crypto v0.32.0/go.mod h1:ZnnJkOaASj8g0AjIduWNlq2NRxL0PlBrbKVyZ6V/Ugc=
 golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561 h1:MDc5xs78ZrZr3HMQugiXOAkSZtfTpbJLDr/lwfgO53E=
 golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
 golang.org/x/image v0.23.0 h1:HseQ7c2OpPKTPVzNjG5fwJsOTCiiwS4QdsYi5XU6H68=
 golang.org/x/image v0.23.0/go.mod h1:wJJBTdLfCCf3tiHa1fNxpZmUI4mmoZvwMCPP0ddoNKY=
 golang.org/x/mod v0.22.0 h1:D4nJWe9zXqHOmWqj4VMOJhvzj7bEZg4wEYa759z1pH4=
 golang.org/x/mod v0.22.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
-golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
+golang.org/x/net v0.34.0 h1:Mb7Mrk043xzHgnRM88suvJFwzVrRfHEHJEl5/71CKw0=
-golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
+golang.org/x/net v0.34.0/go.mod h1:di0qlW3YNM5oh6GqDGQr92MyTozJPmybPK4Ev/Gm31k=
 golang.org/x/sync v0.10.0 h1:3NQrjDixjgGwUOCaF8w2+VYHv0Ve/vGYSbdkTa98gmQ=
 golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.28.0 h1:Fksou7UEQUWlKvIdsqzJmUmCX3cZuD2+P3XyyzwMhlA=
+golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
-golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
-golang.org/x/time v0.8.0 h1:9i3RxcPv3PZnitoVGMPDKZSq1xW1gK1Xy3ArNOGZfEg=
+golang.org/x/time v0.9.0 h1:EsRrnYcQiGH+5FfbgvV4AP7qEZstoyrHB0DzarOQ4ZY=
-golang.org/x/time v0.8.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
+golang.org/x/time v0.9.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
-golang.org/x/tools v0.28.0 h1:WuB6qZ4RPCQo5aP3WdKZS7i595EdWqWR8vqJTlwTVK8=
+golang.org/x/tools v0.29.0 h1:Xx0h3TtM9rzQpQuR4dKLrdglAmCEN5Oi+P74JdhdzXE=
-golang.org/x/tools v0.28.0/go.mod h1:dcIOrVd3mfQKTgrDVQHqCPMWy6lnhfhtX3hLXYVLfRw=
+golang.org/x/tools v0.29.0/go.mod h1:KMQVMRsVxU6nHCFXrBPhDB8XncLNLM0lIy/F14RP588=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

lib/markdown.go

@@ -14,6 +14,7 @@ import (
 
 type FrontMatter struct {
 	Name        string
+	Description string
 	Date        string
 	Tags        []string
 }

pages/post.go

@@ -6,18 +6,19 @@ import (
 	"io/fs"
 	"net/http"
 
-	contentfs "goth.stack/content"
-	"goth.stack/lib"
 	chromahtml "github.com/alecthomas/chroma/v2/formatters/html"
 	"github.com/labstack/echo/v4"
 	"github.com/yuin/goldmark"
 	highlighting "github.com/yuin/goldmark-highlighting/v2"
 	"gopkg.in/yaml.v2"
+	contentfs "goth.stack/content"
+	"goth.stack/lib"
 )
 
 type PostProps struct {
 	Content     template.HTML
 	Name        string
+	Description string
 	Date        string
 	Tags        []string
 }
@@ -66,6 +67,7 @@ func Post(c echo.Context) error {
 	props := PostProps{
 		Content:     template.HTML(buf.String()),
 		Name:        frontmatter.Name,
+		Description: frontmatter.Description,
 		Date:        frontmatter.Date,
 		Tags:        frontmatter.Tags,
 	}

pages/templates/home.html

@@ -2,8 +2,12 @@
 GOTH Stack // Root
 {{end}}
 
-{{define "headercontent"}}
+{{define "description"}}
-{{template "title" .}}
+HTMX + Golang + Go Template Starter
+{{end}}
+
+{{define "navcontent"}}
+GOTH Stack // Root
 {{end}}
 
 {{define "head"}}

pages/templates/layouts/base.html

@@ -6,7 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <link rel="icon" href="/public/favicon.ico" />
     <title>{{template "title" .}}</title>
-    <meta name="description" content="Just here for the vibes...">
+    <meta name="description" content="{{template "description" .}}">
     {{template "head" .}}
   </head>
 

pages/templates/layouts/post.html

@@ -5,8 +5,8 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <link rel="icon" href="/public/favicon.ico" />
-    <title>{{.Name}}</title>
+    <title>{{template "title" .}}</title>
-    <meta name="description" content="Just here for the vibes...">
+    <meta name="description" content="{{template "description" .}}">
     {{template "head" .}}
   </head>
 
@@ -52,8 +52,8 @@
 
       </article>
     </main>
-    <script src="/public/js/htmx.preload.js"></script>
     <script src="/public/js/htmx.base.js"></script>
+    <script src="/public/js/htmx.preload.js"></script>
     {{template "foot" .}}
   </body>
 </html>

pages/templates/partials/header.html

@@ -1,7 +1,7 @@
 {{define "header"}}
 <header class="navbar bg-base-100">
     <div class="navbar-start">
-      <a class="btn btn-ghost normal-case text-lg sm:text-xl text-white" href="/">{{template "headercontent".}}</a>
+      <a class="btn btn-ghost normal-case text-lg sm:text-xl text-white" href="/">{{template "navcontent".}}</a>
     </div>
     <div class="navbar-end z-50">
       <div class="dropdown dropdown-end">

pages/templates/post.html

@@ -1,9 +1,13 @@
 {{define "title"}}
-GOTH Stack // Post
+GOTH Stack // Post // {{.Name}}
 {{end}}
 
-{{define "headercontent"}}
+{{define "description"}}
-{{template "title" .}}
+{{.Description}}
+{{end}}
+
+{{define "navcontent"}}
+GOTH Stack // Post // {{.Name}}
 {{end}}
 
 {{define "head"}}

pages/templates/posts.html

@@ -1,9 +1,13 @@
 {{define "title"}}
-GOTH Stack // Blog
+GOTH Stack // Posts
 {{end}}
 
-{{define "headercontent"}}
+{{define "description"}}
-{{template "title" .}}
+Blog Posts
+{{end}}
+
+{{define "navcontent"}}
+GOTH Stack // Posts
 {{end}}
 
 {{define "head"}}

pages/templates/tools.html

@@ -2,8 +2,12 @@
 GOTH Stack // Tools
 {{end}}
 
-{{define "headercontent"}}
+{{define "description"}}
-{{template "title" .}}
+Misc. Tools for Demo Purposes
+{{end}}
+
+{{define "navcontent"}}
+GOTH Stack // Tools
 {{end}}
 
 {{define "head"}}

pages/templates/tools.resize.html

@@ -2,8 +2,12 @@
 GOTH Stack // Tools // Resizer
 {{end}}
 
-{{define "headercontent"}}
+{{define "description"}}
-{{template "title" .}}
+A tool to re-size images.
+{{end}}
+
+{{define "navcontent"}}
+GOTH Stack // Tools // Resizer
 {{end}}
 
 {{define "head"}}

pages/templates/tools.ssedemo.html

@@ -1,7 +1,13 @@
-{{define "title"}}GOTH Stack // Tools // SSE Demo{{end}}
+{{define "title"}}
+GOTH Stack // Tools // SSE Demo
+{{end}}
 
-{{define "headercontent"}}
+{{define "navcontent"}}
-{{template "title" .}}
+GOTH Stack // Tools // SSE Demo
+{{end}}
+
+{{define "description"}}
+A demo of an SSE implimentation.
 {{end}}
 
 {{define "head"}}

public/js/htmx.preload.js

@@ -1,141 +1,388 @@
-// This adds the "preload" extension to htmx.  By default, this will
+(function() {
-// preload the targets of any tags with `href` or `hx-get` attributes
+  /**
-// if they also have a `preload` attribute as well.  See documentation
+   * This adds the "preload" extension to htmx. The extension will 
-// for more details
+    * preload the targets of elements with "preload" attribute if:
-htmx.defineExtension('preload', {
+    * - they also have `href`, `hx-get` or `data-hx-get` attributes
+    * - they are radio buttons, checkboxes, select elements and submit
+    *   buttons of forms with `method="get"` or `hx-get` attributes
+    * The extension relies on browser cache and for it to work
+    * server response must include `Cache-Control` header
+    * e.g. `Cache-Control: private, max-age=60`.
+    * For more details @see https://htmx.org/extensions/preload/
+  */
 
+  htmx.defineExtension('preload', {
     onEvent: function(name, event) {
-    // Only take actions on "htmx:afterProcessNode"
+      // Process preload attributes on `htmx:afterProcessNode`
-    if (name !== 'htmx:afterProcessNode') {
+      if (name === 'htmx:afterProcessNode') {
-      return
+        // Initialize all nodes with `preload` attribute
-    }
+        const parent = event.target || event.detail.elt;
+        const preloadNodes = [
+          ...parent.hasAttribute("preload") ? [parent] : [],
+          ...parent.querySelectorAll("[preload]")]
+        preloadNodes.forEach(function(node) {
+          // Initialize the node with the `preload` attribute
+          init(node)
 
-    // SOME HELPER FUNCTIONS WE'LL NEED ALONG THE WAY
+          // Initialize all child elements which has
-
+          // `href`, `hx-get` or `data-hx-get` attributes
-    // attr gets the closest non-empty value from the attribute.
+          node.querySelectorAll('[href],[hx-get],[data-hx-get]').forEach(init)
-    var attr = function(node, property) {
-      if (node == undefined) { return undefined }
-      return node.getAttribute(property) || node.getAttribute('data-' + property) || attr(node.parentElement, property)
-    }
-
-    // load handles the actual HTTP fetch, and uses htmx.ajax in cases where we're
-    // preloading an htmx resource (this sends the same HTTP headers as a regular htmx request)
-    var load = function(node) {
-      // Called after a successful AJAX request, to mark the
-      // content as loaded (and prevent additional AJAX calls.)
-      var done = function(html) {
-        if (!node.preloadAlways) {
-          node.preloadState = 'DONE'
-        }
-
-        if (attr(node, 'preload-images') == 'true') {
-          document.createElement('div').innerHTML = html // create and populate a node to load linked resources, too.
-        }
-      }
-
-      return function() {
-        // If this value has already been loaded, then do not try again.
-        if (node.preloadState !== 'READY') {
-          return
-        }
-
-        // Special handling for HX-GET - use built-in htmx.ajax function
-        // so that headers match other htmx requests, then set
-        // node.preloadState = TRUE so that requests are not duplicated
-        // in the future
-        var hxGet = node.getAttribute('hx-get') || node.getAttribute('data-hx-get')
-        if (hxGet) {
-          htmx.ajax('GET', hxGet, {
-            source: node,
-            handler: function(elt, info) {
-              done(info.xhr.responseText)
-            }
         })
         return
       }
 
-        // Otherwise, perform a standard xhr request, then set
+      // Intercept HTMX preload requests on `htmx:beforeRequest` and
-        // node.preloadState = TRUE so that requests are not duplicated
+      // send them as XHR requests instead to avoid side-effects,
-        // in the future.
+      // such as showing loading indicators while preloading data. 
-        if (node.getAttribute('href')) {
+      if (name === 'htmx:beforeRequest') {
-          var r = new XMLHttpRequest()
+        const requestHeaders = event.detail.requestConfig.headers
-          r.open('GET', node.getAttribute('href'))
+        if (!("HX-Preloaded" in requestHeaders
-          r.onload = function() { done(r.responseText) }
+              && requestHeaders["HX-Preloaded"] === "true")) {
-          r.send()
-        }
-      }
-    }
-
-    // This function processes a specific node and sets up event handlers.
-    // We'll search for nodes and use it below.
-    var init = function(node) {
-      // If this node DOES NOT include a "GET" transaction, then there's nothing to do here.
-      if (node.getAttribute('href') + node.getAttribute('hx-get') + node.getAttribute('data-hx-get') == '') {
           return
         }
 
-      // Guarantee that we only initialize each node once.
+        event.preventDefault()
+        // Reuse XHR created by HTMX with replaced callbacks
+        const xhr = event.detail.xhr
+        xhr.onload = function() {
+          processResponse(event.detail.elt, xhr.responseText)
+        }
+        xhr.onerror = null
+        xhr.onabort = null
+        xhr.ontimeout = null
+        xhr.send()
+      }
+    }
+  })
+
+  /**
+   * Initialize `node`, set up event handlers based on own or inherited
+   * `preload` attributes and set `node.preloadState` to `READY`.
+   * 
+   * `node.preloadState` can have these values:
+   * - `READY` - event handlers have been set up and node is ready to preload
+   * - `TIMEOUT` - a triggering event has been fired, but `node` is not
+   *   yet being loaded because some time need to pass first e.g. user
+   *   has to keep hovering over an element for 100ms for preload to start
+   * - `LOADING` means that `node` is in the process of being preloaded
+   * - `DONE` means that the preloading process is complete and `node`
+   *    doesn't need a repeated preload (indicated by preload="always")
+   * @param {Node} node
+   */
+  function init(node) {
+    // Guarantee that each node is initialized only once
     if (node.preloadState !== undefined) {
       return
     }
 
-      // Get event name from config.
+    if (!isValidNodeForPreloading(node)) {
-      var on = attr(node, 'preload') || 'mousedown'
+      return
-      const always = on.indexOf('always') !== -1
-      if (always) {
-        on = on.replace('always', '').trim()
     }
 
-      // FALL THROUGH to here means we need to add an EventListener
+    // Initialize form element preloading
-
+    if (node instanceof HTMLFormElement) {
-      // Apply the listener to the node
+      const form = node
-      node.addEventListener(on, function(evt) {
+      // Only initialize forms with `method="get"` or `hx-get` attributes
-        if (node.preloadState === 'PAUSE') { // Only add one event listener
+      if (!((form.hasAttribute('method') && form.method === 'get')
-          node.preloadState = 'READY' // Required for the `load` function to trigger
+        || form.hasAttribute('hx-get') || form.hasAttribute('hx-data-get'))) {
-
+        return
-          // Special handling for "mouseover" events.  Wait 100ms before triggering load.
-          if (on === 'mouseover') {
-            window.setTimeout(load(node), 100)
-          } else {
-            load(node)() // all other events trigger immediately.
       }
+      for (let i = 0; i < form.elements.length; i++) {
+        const element = form.elements.item(i);
+        init(element);
+        element.labels.forEach(init);
+      }
+      return
     }
-      })
     
-      // Special handling for certain built-in event handlers
+    // Process node configuration from preload attribute
-      switch (on) {
+    let preloadAttr = getClosestAttribute(node, 'preload');
-        case 'mouseover':
+    node.preloadAlways = preloadAttr && preloadAttr.includes('always');
-          // Mirror `touchstart` events (fires immediately)
+    if (node.preloadAlways) {
-          node.addEventListener('touchstart', load(node))
+      preloadAttr = preloadAttr.replace('always', '').trim();
+    }
+    let triggerEventName = preloadAttr || 'mousedown';
 
-          // WHhen the mouse leaves, immediately disable the preload
+    // Set up event handlers listening for triggering events
+    const needsTimeout = triggerEventName === 'mouseover'
+    node.addEventListener(triggerEventName, getEventHandler(node, needsTimeout))
+
+    // Add `touchstart` listener for touchscreen support
+    // if `mousedown` or `mouseover` is used
+    if (triggerEventName === 'mousedown' || triggerEventName === 'mouseover') {
+      node.addEventListener('touchstart', getEventHandler(node))
+    }
+
+    // If `mouseover` is used, set up `mouseout` listener,
+    // which will abort preloading if user moves mouse outside
+    // the element in less than 100ms after hovering over it
+    if (triggerEventName === 'mouseover') {
       node.addEventListener('mouseout', function(evt) {
-            if ((evt.target === node) && (node.preloadState === 'READY')) {
+        if ((evt.target === node) && (node.preloadState === 'TIMEOUT')) {
-              node.preloadState = 'PAUSE'
+          node.preloadState = 'READY'
         }
       })
-          break
-
-        case 'mousedown':
-          // Mirror `touchstart` events (fires immediately)
-          node.addEventListener('touchstart', load(node))
-          break
     }
 
-      // Mark the node as ready to run.
+    // Mark the node as ready to be preloaded
-      node.preloadState = 'PAUSE'
+    node.preloadState = 'READY'
-      node.preloadAlways = always
+
-      htmx.trigger(node, 'preload:init') // This event can be used to load content immediately.
+    // This event can be used to load content immediately
+    htmx.trigger(node, 'preload:init')
   }
 
-    // Search for all child nodes that have a "preload" attribute
+  /**
-    const parent = event.target || event.detail.elt;
+   * Return event handler which can be called by event listener to start
-    parent.querySelectorAll("[preload]").forEach(function(node) {
+   * the preloading process of `node` with or without a timeout
-      // Initialize the node with the "preload" attribute
+   * @param {Node} node 
-      init(node)
+   * @param {boolean=} needsTimeout 
-
+   * @returns {function(): void}
-      // Initialize all child elements that are anchors or have `hx-get` (use with care)
+   */
-      node.querySelectorAll('a,[hx-get],[data-hx-get]').forEach(init)
+  function getEventHandler(node, needsTimeout = false) {
-    })
+    return function() {
+      // Do not preload uninitialized nodes, nodes which are in process
+      // of being preloaded or have been preloaded and don't need repeat
+      if (node.preloadState !== 'READY') {
+        return
       }
-})
+
+      if (needsTimeout) {
+        node.preloadState = 'TIMEOUT'
+        const timeoutMs = 100
+        window.setTimeout(function() {
+          if (node.preloadState === 'TIMEOUT') {
+            node.preloadState = 'READY'
+            load(node)
+          }
+        }, timeoutMs)
+        return
+      }
+
+      load(node)
+    }
+  }
+
+  /**
+   * Preload the target of node, which can be:
+   *  - hx-get or data-hx-get attribute
+   *  - href or form action attribute
+   * @param {Node} node 
+   */
+  function load(node) {
+    // Do not preload uninitialized nodes, nodes which are in process
+    // of being preloaded or have been preloaded and don't need repeat
+    if (node.preloadState !== 'READY') {
+      return
+    }
+    node.preloadState = 'LOADING'
+
+    // Load nodes with `hx-get` or `data-hx-get` attribute
+    // Forms don't reach this because only their elements are initialized
+    const hxGet = node.getAttribute('hx-get') || node.getAttribute('data-hx-get')
+    if (hxGet) {
+      sendHxGetRequest(hxGet, node);
+      return
+    }
+
+    // Load nodes with `href` attribute
+    const hxBoost = getClosestAttribute(node, "hx-boost") === "true"
+    if (node.hasAttribute('href')) {
+      const url = node.getAttribute('href');
+      if (hxBoost) {
+        sendHxGetRequest(url, node);
+      } else {
+        sendXmlGetRequest(url, node);
+      }
+      return
+    }
+
+    // Load form elements
+    if (isPreloadableFormElement(node)) {
+      const url = node.form.getAttribute('action')
+                  || node.form.getAttribute('hx-get')
+                  || node.form.getAttribute('data-hx-get');
+      const formData = htmx.values(node.form);
+      const isStandardForm = !(node.form.getAttribute('hx-get')
+                              || node.form.getAttribute('data-hx-get')
+                              || hxBoost);
+      const sendGetRequest = isStandardForm ? sendXmlGetRequest : sendHxGetRequest
+
+      // submit button
+      if (node.type === 'submit') {
+        sendGetRequest(url, node.form, formData)
+        return
+      }
+      
+      // select
+      const inputName = node.name || node.control.name;
+      if (node.tagName === 'SELECT') {
+        Array.from(node.options).forEach(option => {
+          if (option.selected) return;
+          formData.set(inputName, option.value);
+          const formDataOrdered = forceFormDataInOrder(node.form, formData);
+          sendGetRequest(url, node.form, formDataOrdered)
+        });
+        return
+      }
+
+      // radio and checkbox
+      const inputType = node.getAttribute("type") || node.control.getAttribute("type");
+      const nodeValue = node.value || node.control?.value;
+      if (inputType === 'radio') {
+        formData.set(inputName, nodeValue);
+      } else if (inputType === 'checkbox'){
+        const inputValues = formData.getAll(inputName);
+        if (inputValues.includes(nodeValue)) {
+          formData[inputName] = inputValues.filter(value => value !== nodeValue);
+        } else {
+          formData.append(inputName, nodeValue);
+        }
+      }
+      const formDataOrdered = forceFormDataInOrder(node.form, formData);
+      sendGetRequest(url, node.form, formDataOrdered)
+      return
+    }
+  }
+
+  /**
+   * Force formData values to be in the order of form elements.
+   * This is useful to apply after alternating formData values
+   * and before passing them to a HTTP request because cache is
+   * sensitive to GET parameter order e.g., cached `/link?a=1&b=2`
+   * will not be used for `/link?b=2&a=1`.
+   * @param {HTMLFormElement} form 
+   * @param {FormData} formData 
+   * @returns {FormData}
+   */
+  function forceFormDataInOrder(form, formData) {
+    const formElements = form.elements;
+    const orderedFormData = new FormData();
+    for(let i = 0; i < formElements.length; i++) {
+      const element = formElements.item(i);
+      if (formData.has(element.name) && element.tagName === 'SELECT') {
+        orderedFormData.append(
+          element.name, formData.get(element.name));
+        continue;
+      }
+      if (formData.has(element.name) && formData.getAll(element.name)
+        .includes(element.value)) {
+        orderedFormData.append(element.name, element.value);
+      }
+    }
+    return orderedFormData;
+  }
+
+  /**
+   * Send GET request with `hx-request` headers as if `sourceNode`
+   * target was loaded. Send alternated values if `formData` is set.
+   * 
+   * Note that this request is intercepted and sent as XMLHttpRequest.
+   * It is necessary to use `htmx.ajax` to acquire correct headers which
+   * HTMX and extensions add based on `sourceNode`. But it cannot be used
+   * to perform the request due to side-effects e.g. loading indicators. 
+   * @param {string} url 
+   * @param {Node} sourceNode 
+   * @param {FormData=} formData
+   */
+  function sendHxGetRequest(url, sourceNode, formData = undefined) {
+    htmx.ajax('GET', url, {
+      source: sourceNode,
+      values: formData,
+      headers: {"HX-Preloaded": "true"}
+    });
+  }
+
+  /**
+   * Send XML GET request to `url`. Send `formData` as URL params if set.
+   * @param {string} url
+   * @param {Node} sourceNode
+   * @param {FormData=} formData
+   */
+  function sendXmlGetRequest(url, sourceNode, formData = undefined) {
+    const xhr = new XMLHttpRequest()
+    if (formData) {
+      url += '?' + new URLSearchParams(formData.entries()).toString()
+    }
+    xhr.open('GET', url);
+    xhr.setRequestHeader("HX-Preloaded", "true")
+    xhr.onload = function() { processResponse(sourceNode, xhr.responseText) }
+    xhr.send()
+  }
+
+  /**
+   * Process request response by marking node `DONE` to prevent repeated
+   * requests, except if preload attribute contains `always`,
+   * and load linked resources (e.g. images) returned in the response 
+   * if `preload-images` attribute is `true`
+   * @param {Node} node 
+   * @param {string} responseText 
+   */
+  function processResponse(node, responseText) {
+    node.preloadState = node.preloadAlways ? 'READY' : 'DONE'
+
+    if (getClosestAttribute(node, 'preload-images') === 'true') {
+      // Load linked resources
+      document.createElement('div').innerHTML = responseText
+    }
+  }
+
+  /**
+   * Gets attribute value from node or one of its parents
+   * @param {Node} node 
+   * @param {string} attribute 
+   * @returns { string | undefined }
+   */
+  function getClosestAttribute(node, attribute) {
+    if (node == undefined) { return undefined }
+    return node.getAttribute(attribute)
+      || node.getAttribute('data-' + attribute)
+      || getClosestAttribute(node.parentElement, attribute)
+  }
+
+  /**
+   * Determines if node is valid for preloading and should be
+   * initialized by setting up event listeners and handlers
+   * @param {Node} node 
+   * @returns {boolean}
+   */
+  function isValidNodeForPreloading(node) {
+    // Add listeners only to nodes which include "GET" transactions
+    // or preloadable "GET" form elements
+    const getReqAttrs = ['href', 'hx-get', 'data-hx-get'];
+    const includesGetRequest = node => getReqAttrs.some(a => node.hasAttribute(a))
+                                        || node.method === 'get';
+    const isPreloadableGetFormElement = node.form instanceof HTMLFormElement
+                                        && includesGetRequest(node.form)
+                                        && isPreloadableFormElement(node)
+    if (!includesGetRequest(node) && !isPreloadableGetFormElement) {
+      return false
+    }
+
+    // Don't preload <input> elements contained in <label>
+    // to prevent sending two requests. Interaction on <input> in a
+    // <label><input></input></label> situation activates <label> too.
+    if (node instanceof HTMLInputElement && node.closest('label')) {
+      return false
+    }
+
+    return true
+  }
+
+  /**
+   * Determine if node is a form element which can be preloaded,
+   * i.e., `radio`, `checkbox`, `select` or `submit` button
+   * or a `label` of a form element which can be preloaded.
+   * @param {Node} node 
+   * @returns {boolean}
+   */
+  function isPreloadableFormElement(node) {
+    if (node instanceof HTMLInputElement || node instanceof HTMLButtonElement) {
+      const type = node.getAttribute('type');
+      return ['checkbox', 'radio', 'submit'].includes(type);
+    }
+    if (node instanceof HTMLLabelElement) {
+      return node.control && isPreloadableFormElement(node.control);
+    }
+    return node instanceof HTMLSelectElement;
+  }
+})()

public/js/htmx.ws.js

@@ -411,11 +411,15 @@ This extension adds support for WebSockets to htmx.  See /www/extensions/ws.md f
    */
   function maybeCloseWebSocketSource(elt) {
     if (!api.bodyContains(elt)) {
-      api.getInternalData(elt).webSocket.close()
+      var internalData = api.getInternalData(elt)
+      if (internalData.webSocket) {
+        internalData.webSocket.close()
         return true
       }
       return false
     }
+    return false
+  }
 
   /**
    * createWebSocket is the default method for creating new WebSocket objects.