Fiddler/Jscript.NET :How do I append a string to s

Question

The problem with the below code is that it appends string at the very end of the URL

if (oSession.uriContains("search?q=")) 
    {
        var str = oSession.fullUrl;
        var sAppend = "+test1+test2+test3";
        if (!oSession.uriContains(sAppend))
        {
            oSession.fullUrl = str + sAppend;
        }
    }

So, How can I conditionally place +test1+test2+test3 right next to search?q= ?

Thank you

Answer 1

What's the problem with replace function:

if (oSession.uriContains("search?q=")) 
    {
        var str = oSession.fullUrl;
        var sAppend = "+test1+test2+test3";
        if (!oSession.uriContains(sAppend))
        {
            oSession.fullUrl = str.replace( "search?q=","search?q="+sAppend);
        }
    }