what is the difference b/w these codes javascript ?

Posted by dhaliwaljee on Stack Overflow See other posts from Stack Overflow or by dhaliwaljee
Published on 2010-06-01T12:14:08Z Indexed on 2010/06/01 12:23 UTC
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< input type='text' id='txt' name='txtName' size='20' value='testing'/>

<script type="text/javascript" language='javascript'>
  var val = document.getElementsByName('txtName');
  alert(val[0].value);
  alert(window.txtName.value);
</script>

In above code we are using

alert(val[0].value);

alert(window.txtName.value);

these two ways for getting value from object. What is the difference b/w both ways and which way is best.

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