提升开发幸福感的10条JS技巧总结一些能够提高开发效率的JS技巧，这些技巧很实用，觉得挺好，想推荐给大家，所以有了这篇文

总结一些能够提高开发效率的JS技巧，这些技巧很实用，觉得挺好，想推荐给大家，所以有了这篇文章。

生成随机UID const genUid = () => { var length = 20 var soupLength = genUid.soup_.length var id = [] for (var i = 0; i < length; i++) { id[i] = genUid.soup_.charAt(Math.random() * soupLength) } return id.join('') } genUid.soup_ = '!# $%()*+,-./:;=?@[]^_`{|}~ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789' genUid() // ;l`yCPc9A8IuK}?N6,%} 无loop生成指定长度的数组 const List = len => [...new Array(len).keys()] const list = List(10) // [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] 一行代码去重数组 const list = [1, 1, 2, 3, 6, 45, 8, 5, 4, 6, 5] const uniqueList = [...new Set(list)] // [1, 2, 3, 6, 45, 8, 5, 4] RGB色值生成16进制色值 const rgb2Hex = (r, g, b) => { r = Math.max(Math.min(Number(r), 100), 0) * 2.55 g = Math.max(Math.min(Number(g), 100), 0) * 2.55 b = Math.max(Math.min(Number(b), 100), 0) * 2.55 r = ('0' + (Math.round(r) || 0).toString(16)).slice(-2) g = ('0' + (Math.round(g) || 0).toString(16)).slice(-2) b = ('0' + (Math.round(b) || 0).toString(16)).slice(-2) return '#' + r + g + b } rgb2Hex(100, 50, 0) // "#ff7f00" 颜色混合 const colourBlend = (c1, c2, ratio) => { ratio = Math.max(Math.min(Number(ratio), 1), 0) let r1 = parseInt(c1.substring(1, 3), 16) let g1 = parseInt(c1.substring(3, 5), 16) let b1 = parseInt(c1.substring(5, 7), 16) let r2 = parseInt(c2.substring(1, 3), 16) let g2 = parseInt(c2.substring(3, 5), 16) let b2 = parseInt(c2.substring(5, 7), 16) let r = Math.round(r1 * (1 - ratio) + r2 * ratio) let g = Math.round(g1 * (1 - ratio) + g2 * ratio) let b = Math.round(b1 * (1 - ratio) + b2 * ratio) r = ('0' + (r || 0).toString(16)).slice(-2) g = ('0' + (g || 0).toString(16)).slice(-2) b = ('0' + (b || 0).toString(16)).slice(-2) return '#' + r + g + b } colourBlend('#ff0000', '#3333ff', 0.5) // "#991a80" 判断是否为质数 const mathIsPrime = n => { if (n === 2 || n === 3) { return true } if (isNaN(n) || n <= 1 || n % 1 != 0 || n % 2 == 0 || n % 3 == 0) { return false; } for (let x = 6; x <= Math.sqrt(n) + 1; x += 6) { if (n % (x - 1) == 0 || n % (x + 1) == 0) { return false } } return true } mathIsPrime(0) // true 遍历类数组对象 const elements = document.querySelectorAll(selector); [].prototype.forEach.call(elements, (el, idx, list) => { console.log(el) // 元素节点 }) 判断对象类型 const type = data => Object.prototype.toString.call(data).replace(/^\[object (.+)\]$ /, '$1').toLowerCase() type({}) // object 优化多层判断条件 const getScore = score => { const scoreData = new Array(101).fill(0) .map((data, idx) => ([idx, () => (idx < 60 ? '不及格' : '及格')])) const scoreMap = new Map(scoreData) return (scoreMap.get(score) ? scoreMap.get(score)() : '未知分数') } getScore(30) // 不及格时间格式化 const dateFormatter = (formatter, date) => { date = (date ? new Date(date) : new Date) const Y = date.getFullYear() + '', M = date.getMonth() + 1, D = date.getDate(), H = date.getHours(), m = date.getMinutes(), s = date.getSeconds() return formatter.replace(/YYYY|yyyy/g, Y) .replace(/YY|yy/g, Y.substr(2, 2)) .replace(/MM/g, (M < 10 ? '0' : '') + M) .replace(/DD/g, (D < 10 ? '0' : '') + D) .replace(/HH|hh/g, (H < 10 ? '0' : '') + H) .replace(/mm/g, (m < 10 ? '0' : '') + m) .replace(/ss/g, (s < 10 ? '0' : '') + s) }

dateFormatter('YYYY-MM-DD HH:mm', '1995/02/15 13:55') // 1995-02-15 13:55 后记如果此时正在看文章的你也有类似的技巧心得，不妨在下方留言来分享给大家。

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