Created
March 27, 2020 14:37
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JavaScript Fireworks
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| <body> | |
| <style> | |
| body { | |
| background-color: black; | |
| overflow: hidden; | |
| } | |
| .firework { | |
| top: 0; | |
| left: 0; | |
| } | |
| .dot { | |
| position: absolute; | |
| } | |
| .inner { | |
| border-radius: 999px; | |
| width: 7px; | |
| height: 7px; | |
| animation: 0.8s ease-out explode; | |
| opacity: 0; | |
| } | |
| @keyframes explode { | |
| 0% { | |
| transform: translateY(0); | |
| opacity: 1; | |
| } | |
| 100% { | |
| transform: translateY(100px); | |
| opacity: 0; | |
| } | |
| } | |
| </style> | |
| <script> | |
| function renderFirework(options) { | |
| const numberOfDots = options.numberOfDots | |
| const wrapper = document.createElement('div') | |
| wrapper.className = "firework" | |
| wrapper.style.transform = ` | |
| translate(${options.left}px, ${options.top}px) | |
| scale(${options.scale}) | |
| ` | |
| const angleBetweenDots = 360 / numberOfDots | |
| for (let i = 0; i < numberOfDots; i++) { | |
| const dot = document.createElement('div') | |
| dot.className = "dot" | |
| dot.style.transform = `rotate(${i * angleBetweenDots}deg)` | |
| const dotInner = document.createElement('div') | |
| dotInner.className = "inner" | |
| dotInner.style.backgroundColor = options.color | |
| dot.appendChild(dotInner) | |
| wrapper.appendChild(dot) | |
| } | |
| document.body.appendChild(wrapper) | |
| setTimeout(() => { | |
| document.body.removeChild(wrapper) | |
| }, 3000) | |
| } | |
| function renderRandomFirework() { | |
| const width = document.body.clientWidth | |
| const height = document.body.clientHeight | |
| const red = Math.random() * 255 | |
| const green = Math.random() * 255 | |
| const blue = Math.random() * 255 | |
| const numberOfDots = Math.floor(10 + Math.random()*10) | |
| const scale = 0.5 + Math.random() | |
| renderFirework({ | |
| color: `rgb(${red}, ${green}, ${blue})`, | |
| left: Math.random() * width, | |
| top: Math.random() * height, | |
| numberOfDots, | |
| scale, | |
| }) | |
| const delayUntilNext = 300 + 500*Math.random() | |
| setTimeout(renderRandomFirework, delayUntilNext) | |
| } | |
| renderRandomFirework() | |
| </script> | |
| </body> |
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