Loop control flow

Continue

We can use the continue keyword to skip any messages that contain the word warranty.

js

const comments = [
  "Zoja: I can't wait for the book signing!",
  "Svetlana: Let's talk about your car's extended warranty.",
  'Rufus: Drinks tonight?',
  'Malak: I just bought tickets!'
]

for (let message of comments) {
  // .includes() checks if a string contains another string
  if (message.includes('warranty')) {
    continue
  }

  console.log(message)
}

output

Zoja: I can't wait for the book signing!
Rufus: Drinks tonight?
Malak: I just bought tickets!

Break

The break keyword cancels the loop. This saves us from iterating through the rest of the comments once we've found the one we're looking for.

js

const comments = [
  "Zoja: I can't wait for the book signing!",
  "Svetlana: Let's talk about your car's extended warranty.",
  'Rufus: Drinks tonight?',
  'Malak: I just bought tickets!'
]

for (let message of comments) {
  if (message.startsWith('Rufus')) {
    console.log(message)
    break
  }
}

output

Rufus: Drinks tonight?