Help me, please! Thanks 
<html>
<head>
  <title>Gaps</title>
  <script langauge="javascript">
    function start()
    {
      __A________________________________________________;
    }

    function validate( event )
    {
      if ( B_____{
         event.preventDefault();
         C__________________;
         alert( "Wrong format for age!" );
      }
    }

  </script>
</head>
<body onload="start()">
<form method="post" action="/cgi-bin/prob3.cgi">
  <p>
    Your age:
    <input name="age" type="text">
  <p>

  <input type="reset">
  <input type="submit" value="Submit">
</form>
</body>
</html>

[download]
A---Make the function validate a listener for the submit event(for the
+ form element).
B--- An expression that is true if the value of the textbox does not c
+ontain one to three digits.
C--Select the text box.

[download]

In reply to (dup) fill gaps: struggled 3 days,no result by zhshqzyc

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