reactjs - Class extends React.Component can't use getInitialState in React

Question

I'm tring the ES6 syntax in React, and write the components like:

export default class Loginform extends React.Component {
    getInitialState() {
        return {
          name: '',
          password: ''
        };
    };
}

but the browser throws me a waring about:

Warning: getInitialState was defined on Loginform, a plain JavaScript class. This is only supported for classes created using React.createClass. Did you mean to define a state property instead?

I can handle it with the traditional syntax var Loginform = React.createClass but what's correct ES6 syntax?

Another little thing, I think in traditional syntax React.createClass is an object, so the functions in it is separated by comma, but with the extends class it require semicolon, I don't understand it well.

Answer 1

You don't need semicolons or commas between ES6 class method declarations.

For ES6 classes, getInitialState has been deprecated in favor of declaring an initial state object in the constructor:

export default class Loginform extends React.Component {
  constructor(props, context) {
    super(props, context);

    this.state = {
      name: '',
      password: ''
    };
  };
}