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September 23, 2018 14:08
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Exemplo Criando e Mudando Variaveis no CSS com JS
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| <!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 id="spacing" type="range" name="spacing" min="10" max="200" value="10" data-sizing="px"> | |
| <label for="blur">Blur:</label> | |
| <input id="blur" type="range" name="blur" min="0" max="25" value="10" data-sizing="px"> | |
| <label for="base">Base Color</label> | |
| <input id="base" 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; | |
| background: #193549; | |
| color: white; | |
| font-family: 'helvetica neue', sans-serif; | |
| font-weight: 100; | |
| font-size: 50px; | |
| } | |
| .controls { | |
| margin-bottom: 50px; | |
| } | |
| input { | |
| width:100px; | |
| } | |
| </style> | |
| <script> | |
| const inputs = document.querySelectorAll('.controls input'); | |
| function handleUptate() { | |
| const suffix = this.dataset.sizing || ''; | |
| document.documentElement.style.setProperty(`--${this.name}`, this.value + suffix); | |
| } | |
| inputs.forEach(input => input.addEventListener('change', handleUptate)); | |
| inputs.forEach(input => input.addEventListener('mousemove', handleUptate)); | |
| </script> | |
| </body> | |
| </html> |
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