Homework SourseWrite a javascript that asks the user to input a number chec
Write a javascript that asks the user to input a number, check for the item to be numberic and repeat the question if it is not.
Solution
<html>
<head> </head>
<body onload=\"promptForNumber();\">
<script>
function promptForNumber( text)
{
if(text == \'\' ){
text = \"Please enter a number\";
}
var number = parseInt(window.prompt(text, \"\"));
checkNumber(number);
}
function checkNumber(number){
if (isNaN(number)) {
promptForNumber(\"It is not a number. Please enter a number \", \"\");
}
}
</script>
</body>
</html>
