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随机字符串 #19

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xxxgitone opened this issue Sep 4, 2017 · 0 comments

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xxxgitone commented Sep 4, 2017

之前做随机字符串的获取，都是先定义好一些字符串，然后在其中随机获取一些拼接起来，这样有些麻烦。今天学到一种新的获取方式

Math.random().toString(36) // "0.p1y8abl3of"

// 所以可以进行截取, 比如截取长度为5的
Math.random().toString(36).substr(2, 5) // "a0jzl"

// 如果不想包含数字，可以写正则表达式
Math.random().toString(36).replace(/[^a-z]+/g, '').substr(0, 5) // "iggav"

xxxgitone added the 小知识点 label

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