Question

i am newbie to javascript
and i want to know how to set value in a hidden field using java script
and how to hide a div using java script ?

Answer 1

how to set value in a hidden field
using java script

Set the value for hidden field:

var el = document.getElementById('hidden field id');
el.value = 'some value';

and how to hide a div using java
script

Hide a div:

var el2 = document.getElementById('div id');
el2.style.display = 'none';

You might want to peform either of those actions if some element gets clicked, you could do:

var btn = document.getElementById('button id');

btn.onclick = function(){
    var el = document.getElementById('hidden field id');
    el.value = 'some value';
}

where id can be set for an element like this:

<div id="myid">

Have a look at:

• JavaScript Tutorial