Try this :
put id for anchor tag
<a id="anchor1" href="https://stackoverflow.com/questions/25931155/site.com/register.php?mid=username&mode=bn&bid=1">
use below javascript
<script>
var href = document.getElementById('anchor1').href;
//get index of ?
var indexStart = href.indexOf('?');
var indexLast = href.length;
//get href from ? upto total length
var params = href.substring(indexStart+1, indexLast);
//get tokens with seperator as '&' and iterate it
var paramsArray = params.split("&");
for(var i=0;i<paramsArray.length;i++)
{
//get key and value pair
var paramKeyValue = paramsArray[i];
var keyValue = paramKeyValue.split('=');
alert("Key="+keyValue[0]+" and value="+keyValue[1]);
}
</script>
8
solved How to get attribute of href on the basis of selected text? [closed]