Passing value to JS function through URL on window load

Question

my page http://www.dinomuhic.com/2010/index.php loads the Showreel at the start of the page using an onLoad call in body like this:

Answer 1

You need to parse the query string. I find the easiest way to deal with the query string is to do the following. First, you need to extract the query string from the URL:

var queryStr = window.location.search; // will give you ?sndReq=234

Then, you can strip out the ? and split each query string parameter into an array:

var paramPairs = queryStr.substr(1).split('&');

Now you can build a hash table object of the name/value pairs making up the query string:

var params = {};
for (var i = 0; i < paramPairs.length; i++) {
    var parts = paramPairs[i].split('=');
    params[parts[0]] = parts[1];
}

In your onload, you can now use the parameter thusly:

sndReq(params.sndReq);

Make sure that the code is run within a script in the head of your document so that it's computed before the onload is executed.