• [React] React Fundamentals: Owner Ownee Relationship


    The owner-ownee relationship is used to designate a parent-child relationship with React components as it differs from the DOM relationship.

    When one component renders another component, this is what React refers to as the "owner-ownee relationship," where the parent component is also called a "composite component."

    We are going to create a component call 'Widget' which will be used inside our 'React_app' component.

    'Widget' doesn't have any state, all it has is from 'React_app' pass into it.

    <Widget update={this.myUpdate} name={this.state.name}></Widget>

    Example:


    <!DOCTYPE html>
    <html>
    <head lang="en">
        <meta charset="UTF-8">
        <title>React Lesson 4: Onwer - Ownee</title>
    </head>
    <body>
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.12.2/react.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.12.2/JSXTransformer.js"></script>
    <script type="text/jsx">
    
        var React_app = React.createClass({
            getInitialState: function() {
                return {
                    name: "Joe"
                }
            },
            myUpdate: function(e){
                this.replaceState({name: e.target.value});
            },
            render: function() {
                return (
                     <div>
                         <Widget update={this.myUpdate} name={this.state.name}></Widget>
                         <Widget update={this.myUpdate} name={this.state.name}></Widget>
                         <Widget update={this.myUpdate} name={this.state.name}></Widget>
                         <Widget update={this.myUpdate} name={this.state.name}></Widget>
                         <Widget update={this.myUpdate} name={this.state.name}></Widget>
                     </div>
                );
            }
        });
    
        var Widget = React.createClass({
            render: function(){
                return (
                        <div>
                            Your name: <input type="text" onChange={this.props.update}/>
                            <h1>{this.props.name}</h1>
                        </div>
                )
            }
        });
    
        React.render(<React_app />, document.body);
    </script>
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/Answer1215/p/4361636.html
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