jQuery Callback

Callback function is executed after the current animation is 100% completed.


Problems with jQuery animation

Many jQuery functions involve animation. These functions may take speed or duration as optional parameters.

Example: $("p").hide("slow")

The speed or duration parameter can be set to many different values, such as "slow", " fast", "normal" or milliseconds.

Example

#The following example calls back the function after the hiding effect is fully realized:

Use callback example

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
    </script>
    <script>
        $(document).ready(function(){
            $("button").click(function(){
                $("p").hide("slow",function(){
                    alert("段落现在被隐藏了");
                });
            });
        });
    </script>
</head>
<body>
<button>隐藏</button>
<p>告诉自己,现在的你不能再混再疯再懒惰了,前途很重要。</p>
</body>
</html>

Run the program and try it


The following example does not have a callback function, and the warning box will pop up before the hiding effect is completed:

No callback(callback)

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
    </script>
    <script>
        $(document).ready(function(){
            $("button").click(function(){
                $("p").hide(1000);
                alert("现在段落被隐藏了");
            });
        });
    </script>
</head>
<body>
<button>隐藏</button>
<p>向每个人学习,但不要模仿任何人</p>
</body>
</html>

Run the program and try it


Continuing Learning
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("p").hide("slow",function(){
alert("");
});
});
});
</script>
</head>
<body>
<button></button>
<p></p>
</body>
</html>
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submitReset Code
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