react-jsx

问题 Noob with React here. I am playing around with React. I have a simple component to render inside my component.js. It is included in my index.html file. I included the scripts for React , ReactDOM , and babel in the head . I just want to see that one div render properly. I am not using Node yet, just a exercise with React and Babel (using babel-standalone). I am running the file with a simple http-server. I am getting an error with the React Chrome extension: Waiting for roots to load...to

问题 My project is a journey of three react applications, I want to use some data from application 1 to application 2 and application 2 to application 3. If data to be passed is small, i passed it in query parameter in url of 2nd application. And if data is large or private, i am planning to send it as a post which will be received by application 2. Is there any better way of communicating between react applications? Can i make each reach application as a Library which can expose its data to

问题 My project is a journey of three react applications, I want to use some data from application 1 to application 2 and application 2 to application 3. If data to be passed is small, i passed it in query parameter in url of 2nd application. And if data is large or private, i am planning to send it as a post which will be received by application 2. Is there any better way of communicating between react applications? Can i make each reach application as a Library which can expose its data to

问题 I'm trying to build some menu using React and need some Django reverse urls in this menu. Is it possible to get django url tag inside JSX? How can this be used? render: function() { return <div> <ul className={"myClassName"}> <li><a href="{% url 'my_revese_url' %}">Menu item</a></li> </ul> </div>; } 回答1: You could create a script tag in your page to inject the values from Django into an array. <script> var menuItems = [ {title: 'Menu Item', url: '{% url "my_reverse_url" %}'}, {title: 'Another

问题 Is there an api to call methods from the Activity class? I need to call finish() on my app but couldn't find anything relevant in the docs. To be more specific, I want to finish() the MainActivity from my index.android.jsx, when a particular TouchableHighlight is pressed. [update] For now I'm exposing a finish() method from my NativeModule but maybe there's a better way to do that. https://github.com/sneerteam/react-native-sneer/blob/master/src/main/java/me/sneer/react/SneerModule.java#L84

问题 I am trying to access all ref values in my component and do something with them (for example, create payload to send to a server) I was trying to do a simple for..in loop and than use getDOMNode().value on every ref but it doesn`t work. var Hello = React.createClass({ getAllRefsValues: function() { for(ref in this.refs) { console.log(ref); // ref.getDOMNode().value doesnt work here } }, render: function() { return ( <div> <button onClick={this.getAllRefsValues}>Get all props values</button>

问题 I am trying to access all ref values in my component and do something with them (for example, create payload to send to a server) I was trying to do a simple for..in loop and than use getDOMNode().value on every ref but it doesn`t work. var Hello = React.createClass({ getAllRefsValues: function() { for(ref in this.refs) { console.log(ref); // ref.getDOMNode().value doesnt work here } }, render: function() { return ( <div> <button onClick={this.getAllRefsValues}>Get all props values</button>

问题 class App extends Component { constructor(props) { super(props); this.state = { Card: Card } } HandleEvent = (props) => { this.SetState({Card: Card.Active} } render() { return ( <Card Card = { this.state.Card } HandleEvent={ this.handleEvent }/> <Card Card = { this.state.Card } HandleEvent={ this.handleEvent }/> ) } } const Card = props => { return ( <div style={props.state.Card} onClick={ props.HandleEvent}>Example</div> ) } Every time I click on one of the cards all of my elements change

问题 class App extends Component { constructor(props) { super(props); this.state = { Card: Card } } HandleEvent = (props) => { this.SetState({Card: Card.Active} } render() { return ( <Card Card = { this.state.Card } HandleEvent={ this.handleEvent }/> <Card Card = { this.state.Card } HandleEvent={ this.handleEvent }/> ) } } const Card = props => { return ( <div style={props.state.Card} onClick={ props.HandleEvent}>Example</div> ) } Every time I click on one of the cards all of my elements change

问题 How does one pass a prop without value to a react component? <SomeComponent disableHeight> {/* here */} {({width}) => ( <AnotherComponent autoHeight {/* and here */} width={width} height={300} {...otherProps} /> )} </SomeComponent> Note - there is no default prop values specified for those props. I can't seem to find any references on that, but by observing values for those properties they get assigned to true by default. 回答1: What you are passing is interpreted by the compiler as a boolean