JavaScript

String Methods

const maskCardNumber = (cardNumber) => {
  // Write your code here
};
const cardNumber = '5555 5555 5555 4444';
console.log(maskCardNumber(cardNumber));

const maskCardNumber = (cardNumber) => {
  const cardNumberLength = cardNumber.trim().length;
  const lastFourDigits = cardNumber.slice(-4);
  const numberArray = lastFourDigits.padStart(cardNumberLength, "*");
  return numberArray;
};
const cardNumber = '5555 5555 5555 4444';
console.log(maskCardNumber(cardNumber));

const interviewExcerpt = `InfoWorld: As I understand it, javascript started out as Mocha, then became LiveScript and then became javascript when Netscape and Sun got together. But it actually has nothing to do with Java or not much to do with it, correct?
Eich: That's right. It was all within six months from May till December (1995) that it was Mocha and then LiveScript. And then in early December, Netscape and Sun did a license agreement and it became javascript. And the idea was to make it a complementary scripting language to go with Java, with the compiled language.`;

const fixJavaScript = (interviewExcerpt) => {
// Write your code here
};
console.log(fixJavaScript(interviewExcerpt));

const interviewExcerpt = `InfoWorld: As I understand it, javascript started out as Mocha, then became LiveScript and then became javascript when Netscape and Sun got together. But it actually has nothing to do with Java or not much to do with it, correct?
Eich: That's right. It was all within six months from May till December (1995) that it was Mocha and then LiveScript. And then in early December, Netscape and Sun did a license agreement and it became javascript. And the idea was to make it a complementary scripting language to go with Java, with the compiled language.`;

const fixJavaScript = (interviewExcerpt) => {
return interviewExcerpt.replaceAll("javascript", "JavaScript");
};

console.log(fixJavaScript(interviewExcerpt));

const unitValue = "12rem";
const unitLength = 3;
const trimUnits = (unitValue, unitLength) => {
  // Write your code here
};
console.log(trimUnits(unitValue, unitLength));

const trimUnits = (unitValue, unitLength) => {
  return unitValue.slice(0, -unitLength);
};
const unitValue = "12rem";
const unitLength = 3;
console.log(trimUnits(unitValue, unitLength));