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<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>随机颜色案例</title>
</head><body><script>// 1.定义一个随机颜色函数function getRandomColor(flag) {// 3.是true 则返回#fffff样式的if (flag) {let str = '#'let arr = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9','a', 'b', 'c', 'd', 'e', 'f']// 利用for循环重复抽取六次// 每一次从数组中随机抽取一个数for (let i = 1; i <= 6; i++) {let random = Math.floor(Math.random() * arr.length)str += arr[random]}return str} else {// 4.如果是false，则返回rgb(255，255,255)let r = Math.floor(Math.random() * 256)let g = Math.floor(Math.random() * 256)let b = Math.floor(Math.random() * 256)return `rgb{${r},${g},${b}}`}}// 2.调用函数console.log(getRandomColor(false))console.log(getRandomColor(true))</script>
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