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