Add/Retrieve value to HTML array via Javascript

Hi all,

In have an hidden HTML array say..

<input type="hidden" name="gw_type[]" id="gw_type" />

Code (markup):

..now i want add values to the array/object via javascript
For example i tried this but didnt work..

var gw_type = document.getElementById("gw_type");
gw_type.value[0] = "One";
gw_type.value[1] = "Two";
alert(gw_type.value[0]);

Code (markup):

But it always alerts "undefined".
Please help me with this.

 

u can not store array in input.
Better, do the textarea with visible:none; style and push elements into lines of textarea. Or... If u want to use nput, do as it in following:
HTML

<input type="hidden" name="my_arr" id="input_arr" value="" />

Code (markup):

JS

var input_arr = document.getElementById('input_arr');
function _push(elem, target)
{ target.value = target.value + elem + ";"; }
_push("one", input_arr);
_push("two", input_arr);

Code (markup):

after this, your html will be
<input type="hidden" name="my_arr" id="input_arr" value="one;two;" />
; - is a glue. If u want to make the array, use EXPLODE function (php, js).