How To Check If HTML Element Has a Child Using JQuery

In this tutorial we will see How To Check If HTML Element Has a Child Using JQuery. The JQuery children() method and length property is used for this purpose.

HTML Code

HTML Code is given below.

<!DOCTYPE html>
<html>

<head>
    <title>How To Check If HTML Element Has a Child Using JQuery</title>
    <script src="https://code.jquery.com/jquery-3.5.1.js"></script>
</head>

<body>
    <div id='main'>
        <span>hello</span>
    </div>
</body>

</html>

JQuery Code

JQuery Code is given below. In this code the Jquery .children() method is used with length property of JQuery. The children() method looks for the children elements inside one HTML Element.

The children() method returns all direct children of the HTML Element.

JQuery length property is then used to count no of html elements present inside HTML Element.

<script>
if ($('#main').children().length > 0) {
  alert("I have a child element");
}
</script>

In above HTML Code since there is a child element (span tag) inside the main div element, so that is why alert message will be displayed. If we remove the span element from the div, then no alert message will be displayed.

Demo

Video Tutorial

Watch video tutorial on How To Check If HTML Element Has a Child Using JQuery.

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