Question

I’m trying to add an overlay to a div when the mouse hovers it. Althought it works, the overlay keeps blinking while I move the mouse inside the the div.
How can I prevent this?

HTML:

<div id="d4" class="dmc_block" style="width:60%; background:#eee; z-index:1">
    <div style="padding:20px;">
        <p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. </p>
    </div>
</div>

JS:

$('body').on('mouseenter','.dmc_block',function(){
    var o = $(this).offset();
    var h = $(this).height();
    var w = $(this).width();
    $('<div>').addClass('hover').css({width:w,height:h,left:o.left,top:o.top,position:'absolute',zIndex:2}).insertAfter(this);
}).on('mouseleave','.dmc_block',function(){
    $('.hover').remove();
});    
$('body').on('mouseenter','.hover',function(){return false;});

Fiddle: http://jsfiddle.net/T9Lhw/

Answer 1

Change this:

.on('mouseleave','.dmc_block',function(){

To this:

.on('mouseleave','.hover',function(){

Fiddle

When the overlay .hover is placed above .dmc_block, it triggers the mouseleave of .dmc_block as it is now below the .hover. What you want is the mouseleave of .hover.