How to get number of elements in a div using jQuery

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Answer: Use the jQuery .length property

You can use the jQuery .length property to find the number of elements in a DIV element or any other element. The following example will alert the number of paragraphs in a <div> element having the class .content on document ready event.

  • <!DOCTYPE html>
  • <html lang="en">
  • <head>
  • <meta charset="UTF-8">
  • <title>jQuery Get Number of Paragraphs in a Div</title>
  • <script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
  • <script type="text/javascript">
  •     $(document).ready(function(){
  •         var matched = $(".content p");
  •         alert("Number of paragraphs in content div = " + matched.length);
  •     });
  • </script>  
  • </head> 
  • <body>
  •     <div class="content">
  •         <h1>This is a heading</h1>
  •         <p>This is a paragraph.</p>
  •         <p>This is another paragraph.</p>
  •         <div>This is just a block of text.</div>
  •         <p>This is one more paragraph.</p>
  •     </div>
  • </body>
  • </html>

However, if you want get the numbers of all child elements regardless of their types, just use the universal selector i.e. an asterisk symbol (*), like this:

  • <!DOCTYPE html>
  • <html lang="en">
  • <head>
  • <meta charset="UTF-8">
  • <title>jQuery Get Number of Child Elements in a Div</title>
  • <script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
  • <script type="text/javascript">
  •     $(document).ready(function(){
  •         var matched = $(".content *");
  •         alert("Number of elements in content div = " + matched.length);
  •     });
  • </script>  
  • </head> 
  • <body>
  •     <div class="content">
  •         <h1>This is a heading</h1>
  •         <p>This is a paragraph.</p>
  •         <div>This is just a <em>block of text</em>.</div>
  •         <ul>
  •             <li>An item of an unordered list</li>
  •             <li>Another item of an unordered list</li>
  •         </ul>
  •     </div>
  • </body>
  • </html>

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