for … in loop with string array outputs indices

Question

When I write some javascript such as this:

var words = [\'word1\', \'word2\', \'word3\']

for (word in words) {
    console.log(word)
}

The

Answer 1

As the other answers correctly point out, for...in is not for iterating over arrays. A better option is now available in newer JavaScript engines and transpilers like TypeScript with for...of:

var words = ['word1', 'word2', 'word3']

for (word of words) {
    console.log(word)
}