jQuery fadeTo() Method (original) (raw)

Last Updated : 11 Jul, 2025

The fadeTo() method is an inbuilt method in jQuery that is used to change the opacity of the selected element.

Syntax:

$(selector).fadeTo(speed, opacity, easing, call_function)

Here selector is the selected element.

Parameter: It accepts four parameters which are specified below-

• speed: It specifies the speed of the fading effect.
• opacity: It specifies to fade and this value should be between 0.0 and 1.0.
• easing: It specifies the speed at different points of animation.
• call_function: It is an optional parameter and performs a function after performing fadeTo method.

Return Value: It does not return any value.

Example 1: In the below code, no optional function parameter is passed.

HTML `

This paragraph will fade out !

<!-- After clicking on this paragraph this 
    paragraph will not fade out -->
<p>
    This paragraph will not fade !
</p>

<!-- jQuery code to show working 
    of this method -->
<script>
    $("p:first").click(function () {
        $(this).fadeTo("slow", 0.33);
    });
</script>

`

Output:

Example 2: In the below code, an optional function parameter is passed.

HTML `

<!-- jQuery code to show the working of this method -->
<script>
    $(document).ready(function () {
        $("button").click(function () {
            $("p").fadeTo(2000, 0.2, function () {
                alert("The fadeTo effect has finished!");
            });
        });
    });
</script>
<style>
    body {
        width: 40%;
        height: 100px;
        border: 2px solid green;
        padding: 20px;
    }
</style>

<!-- This paragraph will fade out -->
<p>This is a paragraph.</p>

<!-- Click on this button and 
    paragraph will fade out -->
<button>Click me</button>

`

Output: