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added css variables #5

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Merged
merged 1 commit into from
Oct 7, 2017
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added css variables #5

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26 changes: 26 additions & 0 deletions 03 - CSS Variables/index-START.html
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,21 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>

<style>

:root {
--base: #ffc600;
--spacing: 10px;
--blur: 10px;
}

img {
padding: var(--spacing);
background: var(--base);
filter: blur(var(--blur));
}

.hl {
color: var(--base);
}
/*
misc styles, nothing to do with CSS variables
*/
Expand All @@ -45,6 +60,17 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
</style>

<script>

const inputs = document.querySelectorAll('.controls input');

function handleUpdate() {
const suffix = this.dataset.sizing || '';
document.documentElement.style.setProperty(`--${this.name}`, this.value + suffix);
}

inputs.forEach(input => input.addEventListener('change', handleUpdate));
inputs.forEach(input => input.addEventListener('mousemove', handleUpdate));

</script>

</body>
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