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How to get the height of hidden elements with jQuery?

青灯夜游

Apr 17, 2019 am 10:35 AM

jquery

An HTML element can be hidden with the help of jquery's hide() function, or it can be easily hidden by using visibility:hidden; in css. We can also easily use jquery to find the height of this hidden element. The following article will introduce to you how to get the height of hidden elements in jQuery. I hope it will be helpful to you. [Video tutorial recommendation: jQuery tutorial]

How to get the height of hidden elements with jQuery?

Each HTML element defines two heights, namely the innerheight of the element and outerheight:

●　innerHeight: This height is taken into account when the border width of the selected element is not considered.

●outerHeight: This height will be taken into account when considering the border width of the selected element.

Let’s take a look at the methods of obtaining these two heights through code examples.

Example 1: Get the innerHeight height of the hidden element

html code

<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<style>
			body {
				border: 1px solid red;
				padding: 10px;
				width: 300px;
			}
			
			div {
				width: 310px;
				height: 80px;
				font-weight: bold;
				color: red;
				font-size: 25px;
				border: 1px solid red;
				visibility: hidden;/*隐藏元素*/
			}
		</style>
	</head>

	<body>
		<div>hello world!</div>

		<p id="demo">
			这里将显示隐藏的“div”元素的高度。
		</p>

		<button id="btn1">获取高度</button>

	</body>
	<script type="text/javascript" src="../demo/js/jquery.min.js"></script>
	<script>
		//jquery代码
	</script>

</html>

jquery code

$(document).ready(function() {
   $("#btn1").click(function() {
      var demo = $("div").innerHeight();
      $("#demo").text(demo);
   });
});

Output:

How to get the height of hidden elements with jQuery?

Explanation: We use height: 80px; to set the height of the hidden div to 80; and jQuery’s innerHeight() function can obtain innerHeight height, border width will not be added to the result, so the obtained height is 80.

Example 2: Get the outerHeight of the hidden element

jquery code

$(document).ready(function() { 
       $("#btn1").click(function() { 
                var demo = $("div").outerHeight(); 
                $("#demo").text(demo); 
        }); 
});

Output:

How to get the height of hidden elements with jQuery?

Note: What you can get by using jQuery's outerHeight() function is the outerHeight height. The border width will be added to the result, so the obtained height is 82.

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