lengthReturns: Integer

Description: The number of elements in the jQuery object.

  • version added: 1.0length

The number of elements currently matched. The .size() method will return the same value.


Count the divs. Click to add more.

<!doctype html>
<html lang="en">
  <meta charset="utf-8">
  <title>length demo</title>
  body {
    cursor: pointer;
  div {
    width: 50px;
    height: 30px;
    margin: 5px;
    float: left;
    background: green;
  span {
    color: red;
  <script src="https://code.jquery.com/jquery-3.5.0.js"></script>
$( document.body )
  .click(function() {
    $( document.body ).append( $( "<div>" ) );
    var n = $( "div" ).length;
    $( "span" ).text( "There are " + n + " divs." +
      "Click to add more.");
  // Trigger the click to start
  .trigger( "click" );


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Licensed under the MIT License.