In this example, nothing really. The exact param comes into play when you have multiple paths that have similar names: For example, imagine we had a Users component that displayed a list of users. We also have a CreateUser component that is used to create users. The url for CreateUsers should be nested under Users. … Read more
You can use React.PropTypes.shape() as an argument to React.PropTypes.arrayOf(): // an array of a particular shape. ReactComponent.propTypes = { arrayWithShape: React.PropTypes.arrayOf(React.PropTypes.shape({ color: React.PropTypes.string.isRequired, fontSize: React.PropTypes.number.isRequired, })).isRequired, } See the Prop Validation section of the documentation. UPDATE As of react v15.5, using React.PropTypes is deprecated and the standalone package prop-types should be used instead : // … Read more
If you’re using React Native, you can use the array notation: <View style={[styles.base, styles.background]} /> Check out my detailed blog post about this.
Thanks to @Cory’s hint, i used this: inputChangeHandler : function (event) { var stateObject = function() { returnObj = {}; returnObj[this.target.id] = this.target.value; return returnObj; }.bind(event)(); this.setState( stateObject ); }, If using ES6 or the Babel transpiler to transform your JSX code, you can accomplish this with computed property names, too: inputChangeHandler : function (event) … Read more
Within the render method comments are allowed, but in order to use them within JSX, you have to wrap them in braces and use multi-line style comments. <div className=”dropdown”> {/* whenClicked is a property not an event, per se. */} <Button whenClicked={this.handleClick} className=”btn-default” title={this.props.title} subTitleClassName=”caret”></Button> <UnorderedList /> </div> You can read more about how comments … Read more
I am working with React 0.14.7, use onKeyPress and event.key works well. handleKeyPress = (event) => { if(event.key === ‘Enter’){ console.log(‘enter press here! ‘) } } render: function(){ return( <div> <input type=”text” id=”one” onKeyPress={this.handleKeyPress} /> </div> ); }
Because you are calling that function instead of passing the function to onClick, change that line to this: <button type=”submit” onClick={() => { this.props.removeTaskFunction(todo) }}>Submit</button> => called Arrow Function, which was introduced in ES6, and will be supported on React 0.13.3 or upper.
Is this.props.match.description a string or an object? If it’s a string, it should be converted to HTML just fine. Example: class App extends React.Component { constructor() { super(); this.state = { description: ‘<h1 style=”color:red;”>something</h1>’ } } render() { return ( <div dangerouslySetInnerHTML={{ __html: this.state.description }} /> ); } } ReactDOM.render(<App />, document.getElementById(‘root’)); Result: http://codepen.io/ilanus/pen/QKgoLA?editors=1011 However … Read more
Finally.. I used: componentDidMount() { window.scrollTo(0, 0) } EDIT: React v16.8+ useEffect(() => { window.scrollTo(0, 0) }, [])
You can do that by specifying the ref EDIT: In react v16.8.0 with function component, you can define a ref with useRef. Note that when you specify a ref on a function component, you need to use React.forwardRef on it to forward the ref to the DOM element of use useImperativeHandle to to expose certain … Read more