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url() has some limitations because of allowing unquoted URLs as its contents. For example, it can't use `var()`. To get around this, there's an alternative `src()` function which behaves the same as `url()` except that it is parsed as a regular function, which makes `var()` and friends work properly. There's no WPT test for this as far as I can tell, so I added our own.
25 lines
1,018 B
HTML
25 lines
1,018 B
HTML
<!DOCTYPE html>
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<script src="../include.js"></script>
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<div id="target" style="--some-url: 'awesome.png'"></div>
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<script>
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test(() => {
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let target = document.getElementById("target");
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println(`Before: ${getComputedStyle(target).backgroundImage}`);
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target.style.backgroundImage = "url('cool.png')";
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println(`Using url('cool.png'): ${getComputedStyle(target).backgroundImage}`);
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target.style.backgroundImage = "";
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target.style.backgroundImage = "url(var(--some-url))";
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println(`Using url(var(--some-url)): ${getComputedStyle(target).backgroundImage}`);
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target.style.backgroundImage = "";
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target.style.backgroundImage = "src('cool.png')";
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println(`Using src('cool.png'): ${getComputedStyle(target).backgroundImage}`);
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target.style.backgroundImage = "";
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target.style.backgroundImage = "src(var(--some-url))";
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println(`Using src(var(--some-url)): ${getComputedStyle(target).backgroundImage}`);
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});
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</script>
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