jQuery find()

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This jQuery method is used to fetch the all descendent elements of the selected HTML elements.
If we talk about the DOM traversal tree, this method traverses the all descendent or children of the DOM tree.
To traverse the only the direct child or descendent of the selected element, use children() jQuery method.
To traverse only the direct parent element of the selected element, use parent() jQuery method.
To traverse the all ancestors up to the root element of the selected element, use parents() jQuery method.

Related Topics:

jQuery parentsUntil

jQuery closest

jQuery find

Syntax:

This method has two different signatures.

$(selector).find(filter) ;

Parameter description:

filter: This parameter is used to represents to narrow down the ancestor search. It can be an expression, element or jQuery object. It is optional.

$(selector).children(filter);

filter: This parameter is used to filter the search for descendent. It can be an expression, element or jQuery object. It is required.

Example:

In this example we will return all descendent of <div> element.

<html>
 <head>
 <title> jQuery Example </title>
 <script type = "text/javascript"
        src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
      </script>
<style>
div{
background:pink;
padding:30px;
margin:10px;
font-size:20px;
}
p{
background:yellow;
padding:25px;
margin:10px;
}
span{
background:lightgray;
padding:20px;
margin:10px;
}
b{
background:blue;
padding:15px;
margin:10px;
color:white;
}
button{
background:green;
padding:10px;
color:white;
border:1px solid green;
}
</style>
<script>
$(document).ready(function(){
 $("button").click(function(){
       $("div").find("*").css("border","2px solid red");
});
});
</script>
 </head>
 <body>

<h2> jQuery find() method Example </h2>
<div>
div element
<p> p element(direct child)
<span> span element(grandchild)
<b> b element(great grandchild) </b></span></p>
<p> p element(direct child)
<span> span element(grandchild)
<b> b element great grandchild </b></span></p>
</div>
<button> Click Me! </button>
 </body>
</html>