Drill 13: Explain each line — XMLHttpRequest

Explain what each line of the example does.

Beginner 5 min read Lesson 132 of 300 Challenge included

What you will be able to do

Explain what each line of the example does.

Practice task

Explain what each line of the example does.

xhr.jsJavaScript

const xhr = new XMLHttpRequest()
xhr.open('GET', '/api/lessons')
xhr.onload = () => {
  if (xhr.status >= 200 && xhr.status < 300) console.log(JSON.parse(xhr.responseText))
  else console.error('HTTP', xhr.status)
}
xhr.onerror = () => console.error('Network error')
xhr.send()

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Explain what each line of the example does.

TEXT · starter

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Next: Drill 13: Key term — fetch

Lesson 132 of 300 · 0% of course