Question

I am trying to force the width of a div to the width of a browser window. So that even if the window is resize the adjusts it’s width.

I have been researching for about an hour and have found odd bits and pieces such as .resize() but can’t find anything which works.

Answer 1

Without a container limiting the width, a div should span the width of the browser window by default. You can explicitly set the width to 100%, but that shouldn’t be necessary:

<div style="width:100%;">Hello world</div>

I think CSS is more appropriate here, but you can do this in jQuery like this:

$("#div1").width($(window).width());

To run the above code whenever the window is resized, you can do this:

$(window).resize(function(){
    $("#div1").width($(window).width());
});

Here’s a jsFiddle. For the sake of demonstration, the div expands on button click.