组件实例三大属性 refs

2. 回调函数形式的ref

    <script type="text/babel">
        //创建组件
        class Demo extends React.Component{
            //展示左侧输入框的数据
            showData = ()=>{
                const {input1} = this
                console.log(input1);
            }
            //展示右侧输入框的数据
            showData2 = ()=>{
                const {input2} = this
            }
            render(){
                return (
                    <div>
                        <input ref={c => this.input1 = c} type="text" placeholder="点击按钮提示数据" style={{marginRight:"20px"}}/>
                        <button onClick={this.showData} style={{marginRight:"20px"}}>点我提示左侧的数据</button>
                        <input ref={c => this.input2 = c} onBlur={this.showData2} type="text" placeholder="失去焦点提示数据" />
                    </div>
                )
            }
        }
        ReactDOM.render(<Demo/>,document.getElementById("test"))
    </script>

标签：input2,精通,input1,render,marginRight,showData2,React,输入框,1101
来源： https://blog.csdn.net/Heyuner/article/details/117867251