请问系统中有哪两种State绑定方法？

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javascriptimport React from 'react';

class App extends React.Component { constructor() { super(); this.state={ data: [] }; this.setStateHandler=this.setStateHandler.bind(this); }

setStateHandler() { var item=设置状态...; var myArr=数组内容...; }

片段1

import React from 'react'; class App extends React.Component { constructor() { super(); this.state = { data: [] }; this.setStateHandler = this.setStateHandler.bind(this); }; setStateHandler() { var item = "设置状态..."; var myArray = this.state.data; myArray.push(item); this.setState({data: myArray}); }; render() { return ( SET STATE

State Array: {this.state.data.join()}

); } } export default App; 片段2

import React from 'react'; class App extends React.Component { constructor() { super(); this.state = { data: [] }; }; setStateHandler() { var item = "设置状态..."; var myArray = this.state.data; myArray.push(item); this.setState({data: myArray}); }; render() { return ( this.setStateHandler()}>SET STATE

State Array: {this.state.data.join()}

); } } export default App;