jquery - How to pass array from ajax to php? -

i'm trying pass array ajax php (controller).

what wrong second code var_dump($data) of first code returns appropriate content , second returns null?

first. good.

function myfunction() {     var elementy = document.getelementsbyclassname('inputisbn');     var data = elementy[0].value;      $.ajax({            url: "{{ path('test') }}",            type: "post",            data: { "data": data }      });     } 

second. bad

function myfunction() {     var elementy = document.getelementsbyclassname('inputisbn');     var data = [];         data[elementy[0].name] = elementy[0].value;      $.ajax({            url: "{{ path('test') }}",            type: "post",            data: { "data": data }     });    } 

third. ugly

var elementy = document.getelementsbyclassname('inputisbn'); undefined var data = [];  undefined data[elementy[0].name] = elementy[0].value; "667" 

third 1 line line socond code written in browser console. , it's return should.

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edit

and data pulled out here:

<input type="number" class="inputisbn" size="2" name="examplename"                  value="666" onchange="myfunction()"> 

when passing array php, want include array indicator: []. thi8nk need object: {}.

function myfunction() {     var elementy = $('.inputisbn');     var data = {};     $.each(elementy, function(){       data[$(this).attr('name')] = $(this).val();     })      $.ajax({            url: "{{ path('test') }}",            type: "post",            data: { "data": data }     });    } 

at point, may want serialize data (as mentioned in other answer @adelphia):

'data': json.stringify(data)

jsfiddle: https://jsfiddle.net/twisty/cw77ann7/

you can call in php: print_r($_post['data']);