How to check if an element exists in jQuery

1451 views 2 years ago jQuery

Use the jQuery `.length` Property

You can use the jQuery .length property to determine whether an element exists or not in case if you want to fire some event only if a particular element exists in DOM.

Here's an example that displays an alert on button click if the specified element exists.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery Test If an Element Exists</title>
<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<script>
$(document).ready(function(){
    $("button").click(function(){
        if($("#myDiv").length){
            alert("The element you're testing is present.");
        }
    });
});
</script>
</head>
<body>
    <div id="myDiv"></div>    
    <p>The quick brown fox jumps over the lazy dog</p>
    <button>Check Element</button>
</body>

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