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Changing the hidden element's value in javascript

Discussion in 'JavaScript and AJAX' started by rag84dec, Feb 7, 2008.

  1. rag84dec

    rag84dec New Member

    i want to change the hidden elemtn value in the javascript.
    the name of the filed will have to be formed in the javascript.

    like this
    var temp="name"+1;
    i want temp to be replaced by name1 so that the value
     of name1 field shud change.like this "[B]document.name1.value="newvalue" [/B] "

    <input type='hidden' name='name1' value'Val'>
    Last edited: Feb 7, 2008
  2. pradeep

    pradeep Team Leader

    var temp="name"+1;
    // change the value now
    document.forms[0].elements[temp].value = 'newvalue';
  3. oogabooga

    oogabooga New Member

    If you want to change the "value" (as you say) of an element named "name1" presumably you just do this:
    name1.value = 'newvalue'
    <input type="hidden" name="name1" value="oldvalue">
    If you are trying to programmatically change from name1 to name2 etc., then you want eval, which allows you to execute a string as code.
    function changeit() {
       var newval = "xxxxxxxxxxxxx"
       for (var i = 1; i <= 5; ++i)
          eval( 'name' + i + '.innerText="' + newval + '"' )
    <p id=name1>Paragraph 1</p>
    <p id=name2>Paragraph 2</p>
    <p id=name3>Paragraph 3</p>
    <p id=name4>Paragraph 4</p>
    <p id=name5>Paragraph 5</p>
    <button onclick=changeit()>Press</button>

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