从 Docs ：

 （function（$）{
 $ .fn.myfunction =函数（）{
 alert（'hello world'）; 
 return this; 
}; 
}）（jQuery）; 
 

然后你做了

pre> $（ '＃my_div'）myfunction的（）;


I know that in JavaScript the syntax is as follows:

function myfunction(param){
  //some code
}

Is there a way to declare a function in jQuery that can be added to an element? For example:

$('#my_div').myfunction()

From the Docs:

(function( $ ){
   $.fn.myfunction = function() {
      alert('hello world');
      return this;
   }; 
})( jQuery );

Then you do

$('#my_div').myfunction();