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Generate GUID in Client Side

The preceding function will help you to generate GUID in client side using JavaScript. I hope you like it. 
  1. function getGUID() {  
  2.     var d = new Date().getTime();  
  3.     var varGuid= 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {  
  4.         var r = (d + Math.random() * 16) % 16 | 0;  
  5.         d = Math.floor(d / 16);  
  6.         return (c == 'x' ? r : (r & 0x3 | 0x8)).toString(16);  
  7.     });  
  8.     return varGuid;  
  9. };