How to detect paste in input box with JavaScript?

Sometimes, we want to detect paste in input box with JavaScript.

In this article, we’ll look at how to detect paste in input box with JavaScript.

How to detect paste in input box with JavaScript?

To detect paste in input box with JavaScript, we can listen to the paste event of the input.

For instance, we write:

<input type="text" />

to add an input.

Then we write:

const input = document.querySelector('input')
input.onpaste = (e) => {
  setTimeout(() => {
    console.log(e.target.value)
  }, 0)
}

to select the input with document.querySelector.

Then we set the input.onpaste property to a function that gets the pasted value from e.target.value.

We put the log inside the setTimeout callback since the input is only updated one tick after pasting the content.

Conclusion

To detect paste in input box with JavaScript, we can listen to the paste event of the input.