Migrating prototype.js functionality to jQuery
Posted By : Panaru Chaudhary | 11-Jan-2017
I have used both and like both. It really depends on your project's requirements. To me, it seems like both platforms came from 2 different directions because of 2 different requirements. They were both created out of the need to solve programming issues to help build websites/applications faster and better.
1.)Prototype's selector returns DOM elements .
like as :
$("element_id) //returns DOM objects where we can use javascript functionality on this object.
$("element_id).scrollTop;
but jQuery Does not
$("element_id") //returns jquery object where we can't use javascript functionality on this object
WhereAs
$("#element_id")[0] //returns DOM elements
$("#element_id")[0].scrollTop;
2.) DOM Ready
Initializing on DOM ready is done with Prototype’s observe method as:
document.observe("dom:loaded", function(){ ... });
In jQuery:
$(document).ready(function(){
.............................
}) ;
OR
$(function(){ ... });
I’m mostly writing this for the next time I have to migrate Prototype to jQuery.
3.) Iterating over an array
Prototype adds an each method to Array.
var arr=['jai','hind','jai','bharat'];
arr.each(function(item){
// where item returns -> jai , hind and so on...
});
jQuery can iterate over arrays.
arr.each(function(item , value ){
where item returns -> 0, 1 ,2 so on (i mean it's return index number of array) and
where value returns -> jai , hind so on
});
OR
$.each(arr,function(value ){ // value returns -> jai , hind so on....
});
Binding custom event to DOM elements in Prototype
$("element_id").observe("remove:event", function(event){ ... });
$("element_id").fire("remove:event");
$('#element_id').bind("remove:event", function(event){ ... });
$("element_id").trigger("remove:event");
THANKS
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About Author
Panaru Chaudhary
Panaru is a bright Java developer with good knowledge in Core java , advance Java, Spring , Hibernate and jQuery.