How to access custom attributes from event object in React?

When working with React, it is common to attach custom attributes to elements in order to store additional information. However, accessing these custom attributes from the event object can be a bit tricky. In this blog post, we will explore different ways to access custom attributes from the event object in React.

Method 1: Using event.target.getAttribute()

The first method involves using the getAttribute() method on the event.target to access the custom attribute. Here’s an example:

{`function handleClick(event) {
  const customAttribute = event.target.getAttribute('data-custom');
  console.log(customAttribute);
}

return (
  Click me
);`}

In this example, we have a button element with a custom attribute data-custom. When the button is clicked, the handleClick function is called and the custom attribute value is accessed using getAttribute('data-custom'). The value is then logged to the console.

Method 2: Using event.currentTarget.dataset

The second method involves using the dataset property on the event.currentTarget to access the custom attribute. Here’s an example:

{`function handleClick(event) {
  const customAttribute = event.currentTarget.dataset.custom;
  console.log(customAttribute);
}

return (
  Click me
);`}

In this example, we have a button element with a custom attribute data-custom. When the button is clicked, the handleClick function is called and the custom attribute value is accessed using dataset.custom. The value is then logged to the console.

Method 3: Using event.target.id or event.currentTarget.id

If you have assigned an ID to the element, you can also access the custom attribute using event.target.id or event.currentTarget.id. Here’s an example:

{`function handleClick(event) {
  const customAttribute = document.getElementById(event.target.id).getAttribute('data-custom');
  console.log(customAttribute);
}

return (
  Click me
);`}

In this example, we have a button element with an ID myButton and a custom attribute data-custom. When the button is clicked, the handleClick function is called and the custom attribute value is accessed using document.getElementById(event.target.id).getAttribute('data-custom'). The value is then logged to the console.

These are three different methods to access custom attributes from the event object in React. Choose the method that best suits your needs and enjoy working with custom attributes in your React applications!