jQuery | blur() with Examples

The blur() is an inbuilt method is jQuery that is used to remove focus from the selected element. This method start the blur event or it can be attached a function to run when a blur event occurs.
Syntax:

$(selector).blur(function)

Parameter: It accepts an optional parameter “function”.
Return Value: It does not return anything, it simply trigger the blur event on the selected element.

jQuery code to show the working of blur() function:
Code #1:
In the below code, no function is passed to the blur method.

<html> 
  
<head> 
    <script src="https://ajax.googleapis.com/ajax/libs/ 
               jquery/3.3.1/jquery.min.js"></script> 
    <script> 
        $(document).ready(function() { 
            $("#btn").click(function() { 
                $("input").blur(); 
                $("p").html("This is blur method that is used!!!"); 
            }); 
        }); 
    </script> 
</head> 
  
<body> 
    <!--enter value and click on the button -->
    Enter Value: 
    <input type="text"> 
    <br> 
    <br> 
    <button id="btn">start blur event!!!</button> 
    <p style="color:green"></p> 
</body> 
  
</html> 

Output:
Before entering any value to the “Enter Value” box-

After entering a value of “GeeksforGeeks” to the “Enter Value” box-

After clicking the “start blur event” button-

Code #2:
In the below code, function is passed to the blur method.

<html> 
  
<head> 
    <script src="https://ajax.googleapis.com/ajax/libs/ 
             jquery/3.3.1/jquery.min.js"></script> 
    <script> 
        <!-- jQuery code to show blur method -->
        $(document).ready(function() { 
            $("input").blur(function() { 
                $(this).css("background-color", "#ADFF2F"); 
            }); 
        }); 
    </script> 
</head> 
  
<body> 
    <!-- Enter a value to the field and click outside 
         to see the change -->
    Enter Value: 
    <input type="text" name="fullname"> 
</body> 
  
</html> 