摘要：class Example extends React.Component { constructor() { super(); this.state = { val: 0 }; } componentDidMount() { this.setState({val: this.state.val + 阅读全文

摘要：function instanceOf(left, right) { if (typeof left !== 'object' || left null) { return false; } while(true) { if (left null) { return false; } if (lef 阅读全文

摘要：const vnode = { tag: 'DIV', attrs: { id: 'app' }, children: [{ tag: 'SPAN', children: [{ tag: 'A', children: [] }] }, { tag: 'SPAN', children: [{ tag: 阅读全文