Question

I am developing a CRUD application using DWR & Jquery. I want to display the table records
from database. I want to put a loop to do that. While searching for that, i ve came across
each() method in Jquery. I cant get its exact concept. Any idea, or solution??

Answer 1

There are two types of .each() method in jQuery.

The first is a method of every jQuery object and iterates over the object, which usually contains an array of DOM elements. An example would be:

$('.someClass').each(function(i,val) {
    // "i" references the current index in the iteration
    // "val" references the value (normally DOM element) stored in the jQuery object.
 });

• http://api.jquery.com/each/

The other type is more generic. It is meant to iterate over any type of collection. It is equivalent to a javascript for() loop.

$.each(array, function(i,val) {
    // "i" references the current index in the iteration
    // "val" references the value at that index of the collection.  
});

With $.each() you could iterate over a javascript object, or other types of collections like a NodeList or a jQuery object.

It is what jQuery calls internally when you use the first .each() version noted at the top.

• http://api.jquery.com/jquery.each/