Math.uuid = (function() {
// Private array of chars to use
var CHARS = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split('')
return function (len, radix) {
var chars = CHARS, uuid = [], rnd = Math.random
radix = radix || chars.length
if (len) {
// Compact form
for (var i = 0i <leni++) uuid[i] = chars[0 | rnd()*radix]
} else {
// rfc4122, version 4 form
var r
// rfc4122 requires these characters
uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-'
uuid[14] = '4'
// Fill in random data. At i==19 set the high bits of clock sequence as
// per rfc4122, sec. 4.1.5
for (var i = 0i <36i++) {
if (!uuid[i]) {
r = 0 | rnd()*16
uuid[i] = chars[(i == 19) ? (r &0x3) | 0x8 : r &0xf]
}
}
}
return uuid.join('')
}
})()
// Deprecated - only here for backward compatability
var randomUUID = Math.uuid
function generateUUID()
{
return Math.uuid()
}
可以用这个方法
function generateUUID() {var d = new Date().getTime(),
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
}
