Home How to use the next index of an array in a for..of + if condition in Javascript?

Questions

How to use the next index of an array in a for..of + if condition in Javascript?

January 25, 2023

I’m creating a word filter that if index 1 = dog and index 2 = cat, it will return true. What should I put in next index for word?

let textContainer = ['bird', 'dog', 'cat', 'snake', 'rabbit', 'ox', 'sheep', 'tiger'];

for (let word of textContainer) {
  if (word === 'dog' && (next index for word) === 'cat') {
    return true;
  }
}

>Solution :

Use a normal for (let i = 0; i < textContainer.length; i++) so you can check i + 1

let textContainer = ['bird', 'dog', 'cat', 'snake', 'rabbit', 'ox', 'sheep', 'tiger'];

function checkTextArray() {
  for (let i = 0; i < textContainer.length; i++) {
    if (textContainer[i] === 'dog' && textContainer[i + i] === 'cat') {
        return true;
    }
  }
  return false;
}

const res = checkTextArray()
console.log(res);