--- home --- Return Title Cased String JavaScript · C.O. Scholl

C.O. Scholl

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Topic: Return Title Cased String JavaScript

algorithm

Technologies: JavaScript

Subject: Algorithms

Use Case:

working with strings

First Principles:

Using .forEach() and .slice() with .toUpperCase() and .toLowerCase() methods

const titleCase = (str) => {
  const strArr = str.split(' ');
  const retArr = [];
  strArr.forEach((word) => {
    let initial = word;
    let final  = word;
    initial = initial.slice(0, 1).toUpperCase();
    final = final.slice(1).toLowerCase();
    retArr.push(initial + final);
  })

  return retArr.join(' ');
};

Using .map() and .slice() with .toUpperCase() and .toLowerCase() methods

const titleCase = (str) => {
  const strArr = str.toLowerCase().split(' ');
  const retArr = strArr.map((word) => {
    return (word.slice(0, 1).toUpperCase() + word.slice(1));
  }).join(' ');

  return retArr;
};

Using .charAt() and .subStr() and .map()

const titleCase = (str) => {
  return str.toLowerCase().split(' ').map((word) => {
    return (word.charAt(0).toUpperCase() + word.slice(1));
  }).join(' ');
};

Why I had to learn this

I am currently working through JavaScript Data Structures and Algorithms certification