* * * * * ~~~ //调用函数，传入需要获取的标识长度和指定进制（2、8、10、16） function getuuid(len, radix) { var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split(''); var uuid = []; var i; radix = radix || chars.length; if(len) { for(i = 0; i < len; i++) uuid[i] = chars[0 | Math.random() * radix]; } else { var r; uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-'; uuid[14] = '4'; for(i = 0; i < 36; i++) { if(!uuid[i]) { r = 0 | Math.random() * 16; uuid[i] = chars[(i == 19) ? (r & 0x3) | 0x8 : r]; } } } return uuid.join(''); } ~~~ #### 全球唯一标识码 * * * * * ~~~ 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; } ~~~