javascript nan
let value = 0 / 0; // undefined
if (isNaN(value)) value = 0;javascript nan
let value = 0 / 0; // undefined
if (isNaN(value)) value = 0;nan javascript
// NaN: Not a Number in javascript
console.log(parseInt('1.23')); // 1.23
console.log(parseInt('something')); // NaNnan in js
var val = Number.NaN;nan js
<html>
<head>
<script type = "text/javascript">
<!--
function showValue() {
var dayOfMonth = 50;
if (dayOfMonth < 1 || dayOfMonth > 31) {
dayOfMonth = Number.NaN
console.log("Day of Month must be between 1 and 31.")
}
Document.write("Value of dayOfMonth : " + dayOfMonth );
}
//-->
</script>
</head>
<body>
<p>Click the following to see the result:</p>
<form>
<input type = "button" value = "Click Me" onclick = "showValue();" />
</form>
</body>
</html>Copyright © 2021 Codeinu
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