CODEWITHSUNDEEP
javascriptascii
reallysunny
reallysunny

Reputation: 9

How to get ASCII of number in JavaScript?

I am aware of name.charCodeAt(0). I am having issued with the following code, so I want a solution for below.

var number= 2;
var t = number.charCodeAt(0);
console.log(t);

The answer needs to be in ASCII. I am getting the log as 2 and not as ASCII value 50. What can be the issue?

Upvotes: 0

Views: 2469

Answers (3)

Shabbir Ahmad
Shabbir Ahmad

Reputation: 246

Just convert the number to String and call the method on it.

var number = 2;
var numberInString = number.toString();
var code = numberInString.charCodeAt(0);
console.log(code);

Upvotes: 1

Andy Ray
Andy Ray

Reputation: 32066

You have to cast a number to a string first to use .charCodeAt to get the numerical character code.

var number = 2;
var t = String( number ).charCodeAt( 0 );
console.log( t ); // 50

Upvotes: 1

Paul S.
Paul S.

Reputation: 66324

ASCII is a way of representing String data. You need to first convert your Number to String;

Remember also that String can have arbitrary length so you'll need to iterate over every character.

var x = 2,
    str_x = '' + x,
    chrs = Array.prototype.map.call(str_x, function (e) {return e.charCodeAt(0);});
chrs; // [50]

Finally, JavaScript works with UTF-16/UCS-2 and not plain ASCII. Luckily the values for digits are the same in both so you don't have to do any further transformation here.

Upvotes: 3

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