Question

125

check whether a textarea is empty

rated 0 times [ 128] [ 3] / answers: 1 / hits: 20871 / 12 Years ago, tue, january 22, 2013, 12:00:00

Can anyone please tell me what the problem is with this code:

function c(id)

{

    var empty = document.getElementById(id);

    if(empty.length<1)

    {

        window.alert (This field cant be left empty);

        return true;

    }

    else

    {

        return false;

    }



}

This is my html code:

<textarea rows=3 cols=80 id=ta1 onChange=c('ta1');></textarea>

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tomas

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answered 12 Years ago damiondenzelc · Accepted Answer

The value property of the textarea should be checked to determine if it is empty.

   var content = document.getElementById(id).value;



   if(content.length<1)

   {

        window.alert (This field cant be left empty);

        return true;

   }

   else

   {

        return false;

   }

Working Example: http://jsfiddle.net/35DFR/2/