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- <html>
- <head>
- <script type="text/javascript">
- function checkForm(number)
- {
- var numTrue=true
- try
- {
- number+1
- }
- catch(err)
- {
- numTrue=false
- }
- if (numTrue)
- {
- alert("You entered "+number+" secsessfully."
- }
- else
- {
- alert(number+" is not a number, fool.")
- }
- }
- </script>
- </head>
- <body>
- <form name="myform">
- <p>Enter a number. </p><input type="text" id="text" name="text" />
- <input type="button" name="button" onclick="checkForm(this.form)"
- </form>
- </body>
- </html>
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