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How do I append a query string such as ?a=0 on document ready? It must first check if there is an existing query string. It should only append the query string if there isn't one there already. Otherwise, it should do nothing.

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2  
What do you have so far? –  Todd Motto Jan 17 at 16:54
    
Duplicate question - stackoverflow.com/questions/901115/… –  Tom Cammann Jan 17 at 16:55
    
You may be able to reference: Append to URL and Refresh Page –  Craighead Jan 17 at 16:55
    
Perhaps take a look at: stackoverflow.com/questions/4656843/… –  David J Barnes Jan 17 at 16:56
    
if you have apache: stackoverflow.com/questions/11210412/… –  Fabrizio Calderan Jan 17 at 16:57

3 Answers 3

up vote 2 down vote accepted 
if ( !window.location.search.trim().length ) 
   window.location.href = window.location.href + '?a=0';
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Exactly what i was looking for!! –  user1610812 Jan 17 at 16:59
up vote 3 down vote 
if(!(window.location.search.indexOf("?a=0") > -1)) {
    window.location.href += window.location.search;
}
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Thanks! Perfect exactly what i was looking for. –  user1610812 Jan 17 at 16:58
    
@user1610812 - great. glad to help. Please upvote all helpful answers and accept one as the solution. –  Krishna Jan 17 at 16:59
up vote 0 down vote

Try this:

$( document ).ready(function() {

    url = window.location;  //get current url
    if(url.indexOf("?a=") == -1){ //check for ?a= 
     document.location = url+"?a=0"; // redirect it
    }

});
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