Just a few weeks until the 2021 JavaScript Full-Stack Bootcamp opens.
Signup to the waiting list!


Say you have an element, which you selected using querySelector():

const button = document.querySelector('#mybutton')

You can attach an attribute to it following those steps:

  1. create the attribute
  2. set its value
  3. attach the attribute to the element

Example:

const attribute = document.createAttribute('id')
attribute.value = `remove-${item.name}`
button.setAttributeNode(attribute)

If the element does not exist yet, you have to first create it, then create the attribute, then add the attribute to the element, and finally add the element to the DOM:

const button = document.createElement('button')
const attribute = document.createAttribute('id')
attribute.value = `some-value`
button.setAttributeNode(attribute)
button.textContent = 'Click me'
document.querySelector('.container').appendChild(button)


The 2021 JavaScript Full-Stack Bootcamp will start at the end of March 2021. Don't miss this opportunity, signup to the waiting list!

More browser tutorials: