【react】子組件向父組件傳值2

標籤：

 

var Grandson = React.createClass({    handleSelect: function(event) {        var s = event.target.value + "人";        this.props.handleSelect(s);    },    render: function(){        return (            <div style={{border: "1px solid red",margin: "10px"}}>{this.props.name}：                <select onChange={this.handleSelect}>                    <option value="男">男</option>                    <option value="女">女</option>                </select>            </div>        )    }});var Child = React.createClass({    handleVal: function(event) {        var v = event.target.value + "@china";        this.props.handleVal(v);    },    render: function(){        return (            <div style={{border: "1px solid green",margin: "10px"}}>                {this.props.name}：<input onChange={this.handleVal}/>                <Grandson name="性別" handleSelect={this.props.handleSelect}/>            </div>        )    }});var Parent = React.createClass({    getInitialState: function(){        return {            username: ‘‘,            sex: ‘‘        }    },    handleVal: function(v){        this.setState({username: v});    },    handleSelect: function(s) {        this.setState({sex: s});    },    render: function(){        return (            <div style={{border: "1px solid #000",padding: "10px"}}>                <div>使用者姓名：{this.state.username}</div>                <div>使用者性別：{this.state.sex}</div>                <Child name="姓名" handleVal={this.handleVal.bind(this)} handleSelect={this.handleSelect.bind(this)}/>            </div>        )    }});React.render(  <Parent />,  document.getElementById(‘test‘));

 

【react】子組件向父組件傳值2