css variable

jahid32 · jahid32 · commit 653abac66bec · 2017-11-21T23:42:59.000+06:00
diff --git a/03 - CSS Variables/index.html b/03 - CSS Variables/index.html
@@ -0,0 +1,83 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Scoped CSS Variables and JS</title>
+</head>
+<body>
+<h2>Update CSS Variables with <span class='hl'>JS</span></h2>
+
+<div class="controls">
+    <label for="spacing">Spacing:</label>
+    <input type="range" name="spacing" min="10" max="200" value="10" data-sizing="px">
+
+    <label for="blur">Blur:</label>
+    <input type="range" name="blur" min="0" max="25" value="10" data-sizing="px">
+
+    <label for="base">Base Color</label>
+    <input type="color" name="base" value="#ffc600">
+</div>
+
+<img src="https://source.unsplash.com/7bwQXzbF6KE/800x500">
+
+<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
+    */
+
+    body {
+        text-align: center;
+    }
+
+    body {
+        background: #193549;
+        color: white;
+        font-family: 'helvetica neue', sans-serif;
+        font-weight: 100;
+        font-size: 50px;
+    }
+
+    .controls {
+        margin-bottom: 50px;
+    }
+
+    a {
+        color: var(--base);
+        text-decoration: none;
+    }
+
+    input {
+        width:100px;
+    }
+</style>
+
+<script>
+const inputs = document.querySelectorAll('.controls input');
+function  handleUpdate() {
+    const suffix = this.dataset.sizing || '';
+    document.documentElement.style.setProperty(`--${this.name}`, this.value + suffix);
+    console.log(this.dataset);
+}
+inputs.forEach(input => input.addEventListener('change', handleUpdate));
+//inputs.forEach(input => input.addEventListener('mousemove', handleUpdate));
+
+</script>
+
+</body>
+</html>
