function newGuid()
{
var guid = "";
for (var i = 1; i <= 32; i++){
var n = Math.floor(Math.random()*16.0).toString(16);
guid += n;
if((i==8)||(i==12)||(i==16)||(i==20))
guid += "-";
}
return guid;
}
通过JavaScript生成GUID,布布扣,bubuko.com
原文：http://www.cnblogs.com/denghuachengle/p/3910513.html