What are the pros & cons of these kinds of plugins? [closed]

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What are the advantages and disadvantages of each one:

 $.fn.hello = function() {  
    $(this).append('<div id="hello">Hello world</div>');
    $(this).delegate('#hello', 'click', function(){
        alert("Hello you clicker");
    });
 } 
$(document).ready(function(){
    $('body'开发者_如何转开发).createHello();
});

Or:

 $.hello= function() {  
    $('body').append('<div id="hello">Hello world</div>');
    $('body').delegate('#hello', 'click', function(){
        alert("Hello you clicker");
    });
 } 

$(document).ready(function(){
    $.createHello();
});

?

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The main advantage of that first is that you can use $(this), which you can't use in the second one, so you would have to change it everytime you would want to place it in different location