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38 lines
1.6 KiB
Markdown
38 lines
1.6 KiB
Markdown
---
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layout: layout.njk
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title: </> htmx - high power tools for html
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---
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## The `class-tools` Extension
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The `class-tools` extension allows you to specify CSS classes that will be swapped onto or off of the elements by using
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a `classes` or `data-classes` attribute. This functionality allows you to apply
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[CSS Transitions](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions)
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to your HTML without resorting to javascript.
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A `classes` attribute value consists of "runs", which are separated by an `&` character. All
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class operations within a given run will be applied sequentially, with the delay specified.
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Within a run, a `,` character separates distinct class operations.
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A class operation is an operation name `add`, `remove`, or `toggle`, followed by a CSS class name,
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optionally followed by a colon `:` and a time delay.
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### Usage
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```html
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<div hx-ext="class-tools">
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<div classes="add foo"/> <!-- adds the class "foo" after 100ms -->
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<div class="bar" classes="remove bar:1s"/> <!-- removes the class "bar" after 1s -->
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<div class="bar" classes="remove bar:1s, add foo:1s"/> <!-- removes the class "bar" after 1s
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then adds the class "foo" 1s after that -->
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<div class="bar" classes="remove bar:1s & add foo:1s"/> <!-- removes the class "bar" and adds
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class "foo" after 1s -->
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<div classes="toggle foo:1s"/> <!-- toggles the class "foo" every 1s -->
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</div>
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```
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### Source
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<https://unpkg.com/htmx.org/dist/ext/class-tools.js>
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