Use do-while loop and prompt dialog to restrict user input : do while « Language Basics « JavaScript DHTML






  1. JavaScript DHTML
  2. Language Basics
  3. do while

Use do-while loop and prompt dialog to restrict user input

 

<html>
<head>
<title>A Simple Page</title>
<script language="JavaScript">

do {
    sometext = prompt("Enter some text","Type some text");
}
while (sometext == "Type some text" || sometext == "" || sometext == null);
alert(sometext);

</script>
</head>
<body>

</body>
</html>








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