Is this how you define a function in jQuery

Question

Is this how you define a function in jQuery     document  ready  function          var MyBlah   function  blah    alert  blah              Now to call the function I do   MyBlah  hello

User · Answer

The following example show you how to define a function in jQuery. You will see a button “Click here”, when you click on it, we call our function “myFunction()”.

  $(document).ready(function(){
    $.myFunction = function(){ 
      alert('You have successfully defined the function!'); 
    }
    $(".btn").click(function(){
      $.myFunction();
    });
  });

You can see an example here: How to define a function in jQuery?

User · Answer

You can extend jQuery prototype and use your function as a jQuery method    function            fn MyBlah   function blah                  this  addClass blah           console log  blah class added              jQuery    jQuery document  ready function              blahElementId   MyBlah  newClass          More info on extending jQuery prototype here  http   api jquery com jquery fn extend

User · Answer

No    You define the functions exactly the same way you would in regular javascript     document ready   function        myBlah        var myBlah   function blah       alert blah       Also  There is no need for the

User · Answer

jQuery fn extend       zigzag  function              var text     this  text            var zigzagText               var toggle   true    lower uppper toggle               each text  function i  nome                    zigzagText     toggle    nome toUpperCase     nome toLowerCase                    toggle    toggle    false   true                      return zigzagText

User · Answer

No  you can just write the function as     document  ready function         MyBlah  hello         function MyBlah blah        alert blah       This calls the function MyBlah on content ready

User · Answer

That is how you define an anonymous function that gets called when the document is ready

User · Answer

First of all  your code works and that s a valid way of creating a function in JavaScript  jQuery aside   but because you are declaring a function inside another function  an anonymous one in this case   MyBlah  will not be accessible from the global scope   Here s an example     document  ready  function           var MyBlah   function  blah    alert  blah            MyBlah  Hello this works      Inside the anonymous function we are cool         MyBlah  Oops     This throws a JavaScript error  MyBlah is not a function    This is  sometimes  a desirable behavior since we do not pollute the global namespace  so if your function does not need to be called from other part of your code  this is the way to go   Declaring it outside the anonymous function places it in the global namespace  and it s accessible from everywhere   Lastly  the   at the beginning of the variable name is not needed  and sometimes used as a jQuery convention when the variable is an instance of the jQuery object itself  not necessarily in this case    Maybe what you need is creating a jQuery plugin  this is very very easy and useful as well since it will allow you to do something like this      div message   myBlah  hello     See also  http   www re-cycledair com creating-jquery-plugins

[javascript] Is this how you define a function in jQuery?

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