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React ref获取值import React from 'react'; //导入react //xxx 组件名 class demo extends React.Component { constructor(props){ super(props); this.add = this.add.bind(this) } add(e){ e.preventDefault(); let username = this.username.value console.log(username) } //渲染 render() { return ( <div> <input type="text" ref={name=>{this.username = name }}/> <button onClick={this.add}>确定</button> </div> ) } } export {demo as default} |
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