find() is a built-in method in jquery that is used to find all descendant elements of the selected element. It will traverse all the way down to the last leaf of the selected element in the DOM tree. Let's take a look at the specific use of find().
The find() method obtains the descendants of each element in the current collection of elements, filtered by a selector, jQuery object, or element.
The basic syntax of find() is as follows
$(selector).find()
selector: It can be written using CSS selector syntax.
Let’s look at a specific example
The code is as follows
<!DOCTYPE html>
<html>
<head>
<title>The jQuery Example</title>
<script type = "text/javascript"
src="https://code.jquery.com/jquery-3.3.1.min.js">
</script>
<script type = "text/javascript" language = "javascript">
$(document).ready(function() {
$("p").find("span").addClass("selected");
});
</script>
<style>
.selected { color:red; }
</style>
</head>
<body>
<div>
<p><span>Hello</span>, 你好吗？</p>
<p>yes, 我<span>很好</span>.</p>
</div>
</body>
</html>The display effect on the browser is as follows: All span elements in the p element are selected and highlighted in red show.
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