Hello,
You can use this code in JQuery:
$(document).ready(function(){
var a=getParameterValue('b')
});
function getParameterValue(name)
{
var querystring = location.search.replace('?', '').split('&');
var ParamValue = ''
$.each(querystring, function(i,q){
if(q.split('=')[0] == name){
ParamValue = q.split('=')[1];
}
});
return ParamValue;
}