Create a hidden field in JavaScript

Question

How do you create a hidden field in JavaScript into a particular form ?

    <html>

    <head>

      <script type="text/javascript">

      var a =10;

function test() {

      if (a ==10)  {

        //  ... Here i need to create some hidden field for form named = chells

      }

}

      </script>  

    </head>   

    <body >

      <form id="chells" name="formsdsd">

      <INPUT TYPE=BUTTON OnClick="test();">

     </form> 

    </body>

    </html>

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Answer 1

var input = document.createElement("input");

input.setAttribute("type", "hidden");

input.setAttribute("name", "name_you_want");

input.setAttribute("value", "value_you_want");

//append to form element that you want .
document.getElementById("chells").appendChild(input);

Create a hidden field in JavaScript

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