React Checkbox not sending onChange
To get the checked state of your checkbox the path would be: The alternative is to get it from the event passed into the handleChange method:
reactjs
How to use onload in react?
Instead of rendering the image which you dont want, you could simply load it in componentDidMount like The above solution is just to call imageStore once an image is loaded. However if what you intend is to call imageStore when the component has fully loaded,just trigger this.imageStore() in componentDidMount
Why use Redux over Facebook Flux?
Redux author here! Redux is not that different from Flux. Overall it has same architecture, but Redux is able to cut some complexity corners by using functional composition where Flux uses callback registration. There is not a fundamental difference in Redux, but I find it makes certain abstractions easier, or at least possible to implement, that would … Read more
Async/await in componentDidMount to load in correct order
setState is asynchronous, so you can’t determinate when the state is updated in a sync way. 1) I recommend you don’t use componentDidMount with async, because this method belongs to react lifecycle. Instead you could do: 2) The companyIdParams method doesn’t have a return, so you are waiting for nothing. If you need to wait … Read more
How to declare a global variable in React?
Why don’t you try using Context? You can declare a global context variable in any of the parent components and this variable will be accessible across the component tree by this.context.varname. You only have to specify childContextTypes and getChildContext in the parent component and thereafter you can use/modify this from any component by just specifying contextTypes in the child component. However, please take … Read more
How to clear react-native cache?
For React Native Init approach (without expo) use:
Objects are not valid as a React child. If you meant to render a collection of children, use an array instead
Your data homes is an array, so you would have to iterate over the array using Array.prototype.map() for it to work.
Uncaught TypeError: Cannot read property ‘call’ of undefined at __webpack_require__
Process In order to find a potential solution to this issue, I had to tinker with the optimization module, which was indeed the issue here, even when not enabled surprisingly. My best guess is that some parameters are set to default in production mode and not in dev mode and this causes the issues of imports and undefined properties. … Read more
Pass react component as props
Using this.props.children is the idiomatic way to pass instantiated components to a react component When you pass a component as a parameter directly, you pass it uninstantiated and instantiate it by retrieving it from the props. This is an idiomatic way of passing down component classes which will then be instantiated by the components down … Read more
onEnter not called in React-Router
onEnter no longer exists on react-router-4. You should use <Route render={ … } /> to get your desired functionality. I believe Redirect example has your specific scenario. I modified it below to match yours.