变更地址栏参数

 

 

<html>

<head>

</head>

<body>

<script>

var url='pagename?para=xx&para3=fasfaf&para4=dfa';

function changeURLPar(destiny, par, par_value)

{

 var pattern = par+'=([^&]*)';

 var replaceText = par+'='+par_value;

 

 if (destiny.match(pattern))

 {

  var tmp = '/\\'+par+'=[^&]*/';

  tmp = destiny.replace(eval(tmp), replaceText);

  return (tmp);

 }

 else

 {

  if (destiny.match('[\?]'))

  {

  return destiny+'&'+ replaceText;

  }

  else

  {

  return destiny+'?'+replaceText;

  }

 }

 

 return destiny+'\n'+par+'\n'+par_value;

}

alert(changeURLPar(url,'para','99'))

</script>

</body>

</html>