Fix style updates to avoid unnecessary allocation (#2312)
* Fix style updates to avoid unnecessary allocation - Drive-by: properly censor `cssFloat` -> css `float:` to match DOM behavior * Document `style` syntax + custom property support. [skip ci] * Add a missing test * Add a few more descriptive comments. * Update changelog [skip ci]
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4 changed files with 41 additions and 25 deletions
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@ -72,7 +72,7 @@
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- docs: tweaks: ([#2104](https://github.com/MithrilJS/mithril.js/pull/2104) [@mikeyb](https://github.com/mikeyb), [#2205](https://github.com/MithrilJS/mithril.js/pull/2205), [@cavemansspa](https://github.com/cavemansspa), [#2250](https://github.com/MithrilJS/mithril.js/pull/2250) [@isiahmeadows](https://github.com/isiahmeadows), [#2265](https://github.com/MithrilJS/mithril.js/pull/2265), [@isiahmeadows](https://github.com/isiahmeadows))
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- render/core: avoid touching `Object.prototype.__proto__` setter with `key: "__proto__"` in certain situations ([#2251](https://github.com/MithrilJS/mithril.js/pull/2251))
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- render/core: Vnodes stored in the dom node supplied to `m.render()` are now normalized [#2266](https://github.com/MithrilJS/mithril.js/pull/2266)
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- render/core: CSS vars can now be specified in `{style}` attributes [#2192](https://github.com/MithrilJS/mithril.js/pull/2192)
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- render/core: CSS vars can now be specified in `{style}` attributes ([#2192](https://github.com/MithrilJS/mithril.js/pull/2192) [@barneycarroll](https://github.com/barneycarroll)), ([#2311](https://github.com/MithrilJS/mithril.js/pull/2311) [@porsager](https://github.com/porsager)), ([#2312](https://github.com/MithrilJS/mithril.js/pull/2312) [@isiahmeadows](https://github.com/isiahmeadows))
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- request: don't modify params, call `extract`/`serialize`/`deserialize` with correct `this` value ([#2288](https://github.com/MithrilJS/mithril.js/pull/2288))
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@ -262,6 +262,8 @@ m("div[style=background:red]")
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Using a string as a `style` would overwrite all inline styles in the element if it is redrawn, and not only CSS rules whose values have changed.
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You can use both hyphenated CSS property names (like `background-color`) and camel cased DOM `style` property names (like `backgroundColor`). You can also define [CSS custom properties](https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_variables), if your browser supports them.
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Mithril does not attempt to add units to number values. It simply stringifies them.
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---
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