Changing z-index to make a clicked div appear on top

Question

In my application I can open several div boxes that overlap each other. When clicking on a box that box should be moved to the top. What is the best way to accomplish this?

The only thing I can think of is looping through all the boxes z-index values to get the highest value, and then add 1 to that value and apply it on the clicked div.

Any advices for me?

Answer 1

something like this should do it:

// Set up on DOM-ready
$(function() {
    // Change this selector to find whatever your 'boxes' are
    var boxes = $("div");

    // Set up click handlers for each box
    boxes.click(function() {
        var el = $(this), // The box that was clicked
            max = 0;

        // Find the highest z-index
        boxes.each(function() {
            // Find the current z-index value
            var z = parseInt( $( this ).css( "z-index" ), 10 );
            // Keep either the current max, or the current z-index, whichever is higher
            max = Math.max( max, z );
        });

        // Set the box that was clicked to the highest z-index plus one
        el.css("z-index", max + 1 );
    });
});