For parent-child communication, simply pass props. For child-parent

There's another (uncommon) way of communicating between components: simply expose a method

if-else statements don't work inside JSX. This is because JSX is just syntactic sugar for function calls and object construction. Take this basic example:

Specifying the value prop on a controlled component prevents the user from changing the input unless

In React, inline styles are not specified as a string. Instead they are specified with an object whose key is the camelCased version of the style name, and whose value is the

Improper use of the innerHTML can open you up to a cross-site scripting

Currently, in a component's render, you can only return one node; if you have, say, a list of divs to return, you must wrap your components within

Here's how false renders in different situations: Renders as id="false":

You can't access the children of your component through this.props.children. this.props.children designates the children being passed onto

This isn't really a React-specific tip, as such anti-patterns often occur in code in general; in this case, React simply points them out more clearly.