JAVASCRIPT

count length of a string javascript

/* The length property of a String object contains the length of the
string, in UTF-16 code units. length is a read-only data property of
string instances. */

const str = "Life, the universe and everything. Answer:";
console.log(`${str} ${str.length}`);
// expected output: "Life, the universe and everything. Answer: 42"

javascript create string of given length

var str = new Array(len + 1).join( character );