onfocus event

OnFocus event. Sometimes you want to clear text when user click in TextBox.

Definition:
The onfocus event occurs when an object gets focus.

Code:
Following the javascript.

<script type="text/javascript">
      function Focus(a)
     {
            if(a.value = = a.defaultValue)
                 a.value = "";
     }
</script>

HTML Code:

<input type="text" value="Email ID"  onfocus="Focus(this)"  id="txtEmail" name="txtEmail" />