Using the jQuery each() function to loop through classname elements

Question

I am trying to use jQuery to loop through a list of elements that have the same classname & extract their values.

I have this..

function calculate() {

    // Fix jQuery conflicts
    jQuery.noConflict();

    jQuery(document).ready(function(){    

        // Get all items with the calculate className
        var items = jQuery('.calculate');



    });    

}

I was reading up on the each() function though got confused how to use it properly in this instance.

score 78 · Accepted Answer · edited Jun 15 '15 at 18:17

78

jQuery('.calculate').each(function() {
    var currentElement = $(this);

    var value = currentElement.val(); // if it is an input/select/textarea field
    // TODO: do something with the value
});

and if you wanted to get its index in the collection:

jQuery('.calculate').each(function(index, currentElement) {
    ...
});

Reference: .each() and .val() functions.

edited Jun 15 '15 at 18:17

Thomas G Henry LLC

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answered Mar 13 '11 at 20:11

Darin Dimitrov

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Thanks very much!! This may be a stupid question, but what does "it's index mean"? – Brett Mar 13 '11 at 20:22
It's the index in the collection. So for example if you have 3 elements that match the selector this variable will increment on each iteration et and it will represent the index of the current element. – Darin Dimitrov Mar 13 '11 at 20:24
1

One correction, with Rails and jquery-rails (3.1.0) the parameters are first index and then currentElemnt: `jQuery('.calculate').each(function(index,currentElement) ..` – Albert Català Feb 06 '14 at 19:30
Something I can use: http://stackoverflow.com/questions/27277272/how-to-emulate-xslt-using-jquery-from-html-source ? – SearchForKnowledge Dec 03 '14 at 17:03

Ashish Mishra · Answer 2 · 2020-09-07T15:18:35.587

3

        $('.calculate').each(function(index, element) {
        $(this).text()
        });

edited Sep 07 '20 at 15:18

answered Sep 07 '20 at 13:02

Ashish Mishra

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This answer is not aligned with question: `$('.editable')` is neither declared in the question, nor in the answer – xKobalt Sep 07 '20 at 14:33

Using the jQuery each() function to loop through classname elements

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