I would like to ask why my state is not changing when I do an onclick event. I've search a while ago that I need to bind the onclick function in constructor but still the state is not updating. Here's my code:  import React from 'react&...

I'm using React-router and it works fine while I'm clicking on link buttons, but when I refresh my webpage it does not load what I want.  For instance, I am in localhost/joblist and everything is fine because I arrived here pressing a link....

This question was migrated from Geographic Information...

I'm trying to organize my state by using nested property like this:  this.state = {    someProperty: {       flag:true    } }   But updating state like this,  this.setState({ someProperty.flag: false });   doesn't work. How can this be done...

I have been reading a bunch of react code and I see stuff like this that I don't understand:  handleChange = field => e => {   e.preventDefault();   /// Do something here }...

What does the ... do in this React (using JSX) code and what is it called?  <Modal {...this.props} title='Modal heading' animation={false}>...

I'm trying to find the proper way to define some components which could be used in a generic way:  <Parent>   <Child value="1">   <Child value="2"> </Parent>   There is a logic going on for rendering betw...

I'm trying to do something like the following in React JSX (where ObjectRow is a separate component):  <tbody>     for (var i=0; i < numrows; i++) {         <ObjectRow/>     }  </tbody>   I realize and understand why this i...

I have just found that in react this.setState() function in any component is asynchronous or is called after the completion of the function that it was called in.  Now I searched and found this blog (setState() State Mutation Operation May Be Synch...

We should avoid method binding inside render because during re-rendering it will create the new methods instead of using the old one, that will affect the performance.  So for the scenarios like this:  <input onChange = { this._handleChange.bind...