// 生成随机字符串
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export default function (len = 32) {
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const $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
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const maxPos = $chars.length;
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let str = '';
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for (let i = 0; i < len; i++) {
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str += $chars.charAt(Math.floor(Math.random() * maxPos));
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}
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return str;
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}
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