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30 lines
796 B
30 lines
796 B
2 years ago
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const uuids = []
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function getGuid(size) {
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if (size) size--;
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const uidLen = 13; // 机器码有多少位
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const uidText = '1234567890'
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let uid = ''; // 定义空变量用来接收机器码
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for (let i = 0; i < uidLen; i++) uid += uidText.charAt(Math.floor(Math.random() * uidText.length)); //循环机器码位数随机填充
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let uuid = new Date().valueOf() + uid
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if (uuids && uuids.find(function (o) { return o === uuid })) {
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uuid = !size ? new Date().valueOf() : getGuid(5)
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}
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uuids.push(uuid)
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if (uuids.length > 300) uuids.length = 0
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return uuid
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}
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// for (let index = 0; index < 10; index++) {
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// console.log(getGuid(uuids));
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// }
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const list = ["a", "b", "c"];
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let index = list.findIndex((x) => x == "e");
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console.log(index); // 1
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