WEB222 Week 3 - Arrays

arrays.js

let words = ['one', 'two', 'three', 'four', 'five'];

// version 1 - for loop
for(let i = 0; i < words.length; i++) {
  let word = words[i];
  console.log(word);
}

// version 2 - for-of loop
for(let word of words) {
  console.log(word);
}

// version 3 - forEach()
words.forEach(function(word) {
  console.log(word);
});

// Create a new array by "mapping" (transforming) the original array
let uppercaseWords = words.map(function(word) { 
  return word.toUpperCase();
});

console.log(uppercaseWords);

// Create a new array that filters out items not meeting a boolean test
let fourOrMore = words.filter(function(word) {
  return word.length > 3;
})

console.log(fourOrMore);