# AJAX request success in JavaScript

The `ok` property contains `true` if a server responded with HTTP status from the `2xx` group, and `false` if from another group:

`button.addEventListener('click', function() { fetch('/ajax.html').then(response => { console.log(response.ok); // shows true or false }); });`

Output a text of a page if the request was successful, and an error if a bad status was received.

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