js生成UUID
怎们理解???????/**
*js 生成UUID
* */
generatorId: function () {
var s = [];
var hexDigits = "0123456789abcdef";
for (var i = 0; i < 36; i++) {
s = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
}
s = "4";// bits 12-15 of the time_hi_and_version field to 0010
s = hexDigits.substr((s & 0x3) | 0x8, 1);// bits 6-7 of the clock_seq_hi_and_reserved to 01
s = s = s = s = "-";
var uuid = s.join("");
return uuid;
}
};
一般到传统网站问问,
for (var i = 0; i < 36; i++) {
s = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
}
这个应该是赋值,uuid长度为36
s = "4";// bits 12-15 of the time_hi_and_version field to 0010
s = hexDigits.substr((s & 0x3) | 0x8, 1);// bits 6-7 of the clock_seq_hi_and_reserved to 01
s = s = s = s = "-";
上面是对uuid进一步修改,比如8,13,18,23用横杠链接
最后拼接生成
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