jQuery String Length Check

In this tutorial we will learn how to Check String Length with jQuery. The jQuery val() method and jQuery length property can be used to take string input from user and check it's length.

jQuery val() Method

jQuery val() Method sets or returns the value of the input HTML elements. We use this method to get all values of form elements from the user.

In this example val() method is used to get the string from user through the input tag.

jQuery length property

jQuery length property return the length of elements inside the jQuery object.

In this example length property is used to check the length of string.

HTML Code

HTML Code is given below, in this code we have a input tag and a button tag.

<!DOCTYPE html>
<html>
<head>
<title>jQuery String Length Check</title>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script> 
</head>
<body>
        
<input id='string' type="text" placeholder="String:">
<br><br>
<button id="btn">Check Length</button>    
    
<script src="script.js"></script>    
</body>
</html>

JQuery Code

JQuery Code is given below, the code is executed whenever button is clicked. This is done using the jQuery click() method.

Then the string is stored inside the string variable and the length is checked using the length property.

Take a look at the code given below.

<script>
$(document).ready(function(){
    $('#btn').click(function(){
      var string = $('#string').val();
      var length = string.length;
      alert(length);       
    });
});
</script>

Demo

Video Tutorial

Watch video tutorial on How To Get String Length with jQuery.

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