23 lines
654 B
JavaScript
23 lines
654 B
JavaScript
// uuid生成函数
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function getUuid(len, radix) {
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var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split('')
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let uuid = []
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let i
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radix = radix || chars.length
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if (len) {
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for (i = 0; i < len; i++) uuid[i] = chars[0 | Math.random() * radix]
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} else {
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let r
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uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-'
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uuid[14] = '4'
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for (i = 0; i < 36; i++) {
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if (!uuid[i]) {
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r = 0 | Math.random() * 16
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uuid[i] = chars[(i == 19) ? (r & 0x3) | 0x8 : r]
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}
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}
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}
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return uuid.join('')
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}
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module.exports = getUuid |