How to get the Get value by js

This article example describes how to get the Get value by js. Share it for your reference, as follows:

function getUrlParam(name)
{
  var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)"); //Construct a regular expression object containing target parameters  var r = (1).match(reg); //Match the target parameters  if (r!=null) return unescape(r[2]);
  return null; //Return parameter value}

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I hope this article will be helpful to everyone's JavaScript programming.