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How to get the height of hidden elements with jQuery?
- 青灯夜游Original
- 2019-04-17 10:35:353244browse
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]
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:
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:
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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