js生成唯一标识符实现的代码教程

js生成唯一标识符实现的代码教程

function generateuuid() {
var d = new date().gettime();
var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
var r = (d + math.random()*16)%16 | 0;
d = math.floor(d/16);
return (c=='x' ? r : (r&0x3|0x8)).tostring(16);
});
return uuid;
};