JS 生成唯一值UUID

function getUID() { // 获取唯一值
        return '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);
        });
    },

参考：https://www.cnblogs.com/zero-zm/p/9866918.html