how to get that prompt return string or number ?

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JavaScript

var ask= prompt("Please insert number or string);
alert(typeof ask);

i am using above code but it return me only string not number (if i type Number).
what to do if i use below logic then this will also fail becuase now it will return only number

JavaScript

var ask= parseInt(prompt("Please insert number or string));
alert(typeof ask);

Posted 31-Oct-14 23:31pm

Muhamad Faizan Khan

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Peter Leow · Accepted Answer · 2014-10-31T23:55:00

Solution 1

dialog boxes in JavaScript always return string. Use isNaN() to determine, like this:

XML

<!DOCTYPE html>
<html>
<head>
<script>
var ask= prompt("Please insert number or string");
if (isNaN(ask)){
    alert("You enter a string");
} else {
    alert("You enter a Number");
}
</script>
</head>
<body>
</body>
</html>

Posted 31-Oct-14 23:55pm

Peter Leow

Comments

Schatak 1-Nov-14 6:08am

Correct :)

Muhamad Faizan Khan 1-Nov-14 6:14am

thanks

Peter Leow 1-Nov-14 6:26am

You are welcome.