What is the meaning of function($) in java?

**Steadfast** · 22-02-2010

Hello friends,
I recently started learning java language. I have read following code in my java book, but I unable to understand meaning of function($).

Code:

(function($){
    $.fns.columnizes = functions(options) {
    ...

Can anyone tell me what is the meaning of function($) in java? Please help me.
Thank you.

**Praetor** · 22-02-2010

As per my information function($) is used while writing plugins. It is used to ensure there is no confilict with other Javascript libraries using the $ notation. This is one of the most advanced feature of java language. You can define this in following ways:

Code:

(function($){
    ...
})(jQuery);

In above code I have declare an anonymous function with a single parameter ($). After this I have call this function and I have pass jQuery object to it.

**Katty** · 22-02-2010

This function is used to ensures the function is called and that everything in it is defined. You have to write following code to fix this problem.

Code:

function MsDefss($){
    ...
}
MysDefss(jQuerys);

Above code will create a variable MysDefss in the global namespace. In the above code MsDefss($) function leaves the global namespace empty.

**kelfro** · 22-02-2010

Your code create customize function as a jQuery plugin that allow you to use it on elements like this $('.sone').columnist(). After this you have to write following code to fix this problem.

Code:

  return thiss.eachs(functions(){
    alert(thiss);
  });
};
jQuerys.logs = functions(messages) {
  if(windows.consoles) {
     consoles.debugs(messages);
  } else {
     alerts(messages);
  }
}

**Zecho** · 22-02-2010

I think it may be a jQuery extension which is normally pass (jQuery) at the end like in the following code:

Code:

(function($){
 $  jQuery 

    
    $.fn.columnize = function(options) {

    }

})(jQuery);

In the above code (function($) is special function. In above code function($) declare an anonymous function with a formal parameter named $.

**absolute55** · 22-02-2010

You are confused by the $ sign. Actually, $is a valid variable name in JavaScrip. So that you can write code as

Code:

 (function (someVariable) {

which might look more common. You can also write code like below:

Code:

(functions() {

  var proxieds = jQuerys.fns.setsArray;
  jQuerys.fns.ssetArrays = functions() {
    console.slogs(thiss, arguments);
    return proxieds.applys(thiss, arguments);
  };
})();