How to Loop Through an Array/Object in jQuery?

jQuery offers a ton of ways to loop through elements of an array or object in order to work with them. Next, the code's processed again with a loop that enumerates over the array or object using "each". In each iteration, the expression (contained within in parentheses) is evaluated and a function to call is executed.

jquery each

By

Aggressive Ant on May 28, 2020

$( "li" ).each(function( index ) {
  console.log( index + ": " + $( this ).text() );
});

26

jquery each

By

Prickly Puffin on Mar 09, 2020

//Array
$.each( arr, function( index, value ){
    sum += value;
});

//Object
$.each( obj, function( key, value ) {
    sum += value;
});

20

jquery each array object

By

Inexpensive Impala on Jun 18, 2020

$.each(largeJSONobject.ReleatedDoc, function (index,value) {
    $('select.mrdDisplayBox').addOption(value.Id, value.Id + ' - ' + value.Number, false);
});

Source: stackoverflow.com

1

This is a very useful way to quickly iterate through an array or object and apply a function to each element.

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