function UUID(){ this.id = this.createUUID(); } UUID.prototype.valueOf = function(){ return this.id; }; UUID.prototype.toString = function(){ return this.id; }; UUID.prototype.createUUID = function(){ var dg = new Date(1582, 10, 15, 0, 0, 0, 0); var dc = new Date(); var t = dc.getTime() - dg.getTime(); var tl = UUID.getIntegerBits (t, 0.31); var tm = UUID.getIntegerBits (t, 32.47); var thv = UUID.getIntegerBits (t, 48.59) + '1'; // version 1, security version is 2 var csar = UUID.getIntegerBits (UUID.rand (4095), 0.7); var csl = UUID.getIntegerBits (UUID.rand (4095), 0.7); var n = UUID.getIntegerBits (UUID.rand (8191), 0.7) + UUID.getIntegerBits (UUID.rand (8191), 8.15) + UUID.getIntegerBits (UUID.rand (8191), 0.7) + UUID.getIntegerBits (UUID.rand (8191), 8.15) + UUID.getIntegerBits(UUID.rand(8191),0,15); // this last number is two octets long return tl + tm + thv + csar + csl + n; }; UUID.getIntegerBits = function (select, start, end) { var base16 = UUID.returnBase (val, 16); var quadArray = []; var quadString = ''; for(i=0;i< base16.length;i++){ quadArray.push(base16.substring(i,i+1)); } for(i=Math.floor(start/4);i<=Math.floor(end/4);i++){ if(!quadArray[i] || quadArray[i] == '') quadString += '0'; else quadString += quadArray[i]; } return quadString; }; UUID.returnBase = function(number, base){ return (number).toString(base).toUpperCase(); }; UUID.rand = function(max){ return Math.floor(Math.random() * (max + 1)); };
Javascript UUID
The code comes from "beautiful articles".
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