In React, htmlFor is used instead of the regular for attribute when defining labels in forms. This change is due to the fact that for is a reserved keyword in JavaScript, and using it in JSX would lead to syntax issues.

Why htmlFor?

In HTML, you typically associate a <label> with a form element like this:

<label for="username">Username</label>
<input type="text" id="username" />

However, in JSX (used by React), for is a reserved JavaScript keyword, so React uses htmlFor to avoid conflicts.

Example in React:

function Form() {
  return (
    <div>
      <label htmlFor="username">Username</label>
      <input type="text" id="username" />
    </div>
  );
}

Explanation:

• htmlFor="username": The htmlFor attribute associates the <label> with the form element whose id is username.
• In the JSX code, htmlFor is used instead of for, ensuring there are no conflicts with JavaScript’s reserved for keyword.

Key Takeaways:

• Use htmlFor in JSX instead of for for labeling form elements.
• It ensures compatibility with JavaScript syntax and JSX rules.