Purpose of evt in jQuery event function

0 votes

What is the purpose of using the (evt) here? It seems to work just fine with leaving it empty, like highlight(). also, the alert doesn't include anything.

<script>
$(function (){
    $("#height").html($("#theDiv").height());
    $("#theDiv").on("mouseover mouseleave", highlight); 
});

    function highlight(evt) {
        $("#theDiv").toggleClass("change");
        alert(evt);
    };  
</script>

Jul 25 in Web Development by gaurav
• 17,580 points
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