JavaScript: String.fromCharCode

By Xah Lee. Date: . Last updated: .

str.length

Number of 16 bits units in string str. This is the same as number of characters in string if all the characters are ASCII. [see JavaScript: String Code Unit]

console.log("a".length); // 1

// GRINNING CAT FACE WITH SMILING EYES, 128568, U+1F638
console.log("😸".length); // 2

Here is a function that returns number of chars in string.

// function that returns number of chars in string
const stringRealLength = (str => {
    let i = 0;
    for (let c of str) {
        i += 1;
    }
    return i;
 });

// test
console.log( stringRealLength("😸") ); // 1

// GRINNING CAT FACE WITH SMILING EYES, 128568, U+1F638
console.log("😸".length); // 2
BUY
ΣJS
JavaScript in Depth

JS Obj Reference

String

prototype