随机GUID函数：
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function guid() { function s4() { return Math.floor((1 + Math.random()) * 0x10000) .toString(16) .substring(1); } return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4(); } |
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'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8); return v.toString(16); }); |
主流浏览器：
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'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { var r = crypto.getRandomValues(new Uint8Array(1))[0]%16|0, v = c == 'x' ? r : (r&0x3|0x8); return v.toString(16); }); |
Node.js：
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'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { var r = crypto.randomBytes(1)[0]%16|0, v = c == 'x' ? r : (r&0x3|0x8); return v.toString(16); }); |