1、子组件调用父组件,采用props的方式进行调用和赋值,在父组件中设置相关属性值或者方法,子组件通过props的方式进行属性赋值或者方法调用;
2、父组件调用子组件,采用refs的方式进行调用,需要父组件在调用子组件的时候,添加ref属性,并进行唯一命名,在父组件中即可调用;
var ButtonComment = React.createClass({ getInitialState: function () { return {count:0}; }, //点击发宝刀。。。 sendSword: function () { var newCount = this.state.count + 1; this.setState({ count:newCount }); //通过props调用父组件的方法 this.props.getSwordCount(newCount ); }, render: function () { return ( <button onClick={this.sendSword}>{this.props.buttonName}</button> ); } });
点击按钮,将会调用sendWord方法,更改count的状态,并调用父组件的方法getSwordCount,这时将会重新渲染页面,如果不想重新渲染请重写方法shouldComponentUpdate: function (nextProps,nextState){}并返回false即可。
var ImDaddyComponent = React.createClass({ getInitialState: function () { return {sendCount:0}; }, getSwordCount: function (newCount) { this.setState({sendCount:newCount}); }, render: function () { return ( <div> <ButtonComment getSwordCount={this.getSwordCount} buttonName="儿子送宝刀"/> <p> 父子俩共送{this.state.sendCount}把宝刀!!! </p> </div> ); } });
React.render( <ImDaddyComponent />, document.getElementById(‘index-0331-0011‘) );
以上就完成了子组件调用父组件的属性及方法。
var ImDaddyComponent = React.createClass({ getInitialState: function () { return {sendCount:0}; }, //通过refs方式调用子组件的方法sendSword sendSword: function () { this.refs.getSwordButton.sendSword(); }, getSwordCount: function () { //通过refs方式调用子组件的属性count this.setState({sendCount:this.refs.getSwordButton.state.count + 1}); }, render: function () { return ( <div> //此处需要定义ref属性,且值唯一 <ButtonComment ref="getSwordButton" getSwordCount={this.getSwordCount} buttonName="儿子送宝刀"/> <button onClick={this.sendSword}>通过老爸送宝刀</button> <p> 父子俩共送{this.state.sendCount}把宝刀!!! </p> </div> ); } });
以上,就完成父组件调用子组件。
<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="../../dist/react/react.js"></script>
    <script src="../../dist/react/JSXTransformer.js"></script>
    <script src="../../dist/jquery/jquery.min.js"></script>
    <!--如下的这种引用方式是不正确的,必须使用上面的引用方式-->
    <!--<script src="../../dist/react/JSXTransformer.js"/>-->
</head>
<body>
<div id="index-0331-0011"></div>
<script type="text/jsx">
    var ButtonComment = React.createClass({
        getInitialState: function () {
            return {count:0};
        },
        sendSword: function () {
            var newCount = this.state.count + 1;
            this.setState({count:this.state.count + 1});
            this.props.getSwordCount();
        },
       render: function () {
           return (
                <button onClick={this.sendSword}>{this.props.buttonName}</button>
           );
       }
    });
    var ImDaddyComponent = React.createClass({
        getInitialState: function () {
            return {sendCount:0};
        },
        sendSword: function () {
            this.refs.getSwordButton.sendSword();
        },
        getSwordCount: function () {
            this.setState({sendCount:this.refs.getSwordButton.state.count + 1});
        },
        render: function () {
            return (
                <div>
                    <ButtonComment ref="getSwordButton" getSwordCount={this.getSwordCount} buttonName="儿子送宝刀"/>
                    <button onClick={this.sendSword}>通过老爸送宝刀</button>
                    <p>
                        父子俩共送{this.state.sendCount}把宝刀!!!
                    </p>
                </div>
            );
        }
    });
    React.render(
            <ImDaddyComponent />,
            document.getElementById(‘index-0331-0011‘)
    );
</script>
</body>
</html>
原文:http://www.cnblogs.com/leejersey/p/6547071.html