Extracting value from onclick function call

Question

In jQuery, how do I extract the number 4 from the doThisThing() function call from an onclick event:

<div id="div1" onclick="doThisThing(4)"></div>

and how do I set it?

Thanks.

Answer 1

Is this what you mean? And why do you need to set it, too? Maybe you could explain what you're trying to do so we can better help you.

$(document).ready(function() {
    $('#div1').attr('onclick', 'doThisThing(4)');
});

Answer 2

Once you are in the function itself you will have access to it:

function doThisTHing(inputValue)
{
   alert(inputValue);
}

How you set what gets passed depends on what you are trying to pass.