How can I use jQuery.each() loop on Array of Object

Question

I have this array of object, how can I loop through it using jQuery.each()?

Array
(
 [0] => stdClass Object
 (
 [id] => 1
 [parent_cat_id] => 1
 [child_cat_name] => Java
 [status] => 1
 [date] => 2016年09月11日 01:26:00
 )
 [1] => stdClass Object
 (
 [id] => 2
 [parent_cat_id] => 1
 [child_cat_name] => JavaScript
 [status] => 1
 [date] => 2016年09月11日 01:26:00
 )
 [2] => stdClass Object
 (
 [id] => 3
 [parent_cat_id] => 1
 [child_cat_name] => HTML
 [status] => 1
 [date] => 2016年09月11日 01:26:00
 )
 [3] => stdClass Object
 (
 [id] => 4
 [parent_cat_id] => 1
 [child_cat_name] => PHP
 [status] => 1
 [date] => 2016年09月11日 01:26:00
 )
 [4] => stdClass Object
 (
 [id] => 5
 [parent_cat_id] => 1
 [child_cat_name] => Python
 [status] => 1
 [date] => 2016年09月11日 01:26:00
 )
 [5] => stdClass Object
 (
 [id] => 6
 [parent_cat_id] => 1
 [child_cat_name] => Ruby
 [status] => 1
 [date] => 2016年09月11日 01:26:00
 )
)

I am trying to use this -

$.each( data, function( key, value ) {
 console.log( value );
});

Which giving me following error -

TypeError: invalid 'in' operand e

• Karl-André Gagnon: You show us the dump of a PHP object, can you show us the log of the JS one?
• Simon Gomes: This is what I get if i do console.log(data)
• user400654: @Simon then you are not returning json to the client.

Answer 1

Your array has strange formatting. See this example:

 var data = [ 
 {text: "hello"},
 {text: "good bye"},
 {text: "Hello again"} 
 ]
 $.each( data, function( key, value ) {
 console.log( value.text );
 });

Answer 2

I suggested you to use forEach instead. jQuery.each method has another goal.

data.forEach(function(entry) {
 //Your logic.
});

Answer 3

Your jQuery.each syntax is correct, but As Karl-André Gagnon mentioned, that is the output of a PHP array.

Pass your array through json_encode before sending it to the front-end.

http://php.net/manual/en/function.json-encode.php

• Simon Gomes: Yes I know I can pass is it using json_encode, but I want to keep my data like this so it is suitable for normal php loops.
• user400654: @Simon you can't do both.
• Ben Harrison: @Simon, what I mean is pass it through json_encode as you're passing it to the client-side. You don't have to convert it permanently.
• Simon Gomes: Thank you guys, I will think about it.