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Stop Using “&&” for Conditional Rendering in React
void bugs by not using `&&` in React components Photo by Joshua Hoehne on Unsplash If you’ve seen any React application, you know how to conditionally render parts of a component depending on props and state . Although there are multiple ways of conditional rendering, this article focuses on the JavaScript && operator. The main reason for this emphasis is that the && operator often leads to UI bugs, which can be easily avoided and it’s often not mentioned. Content How “&&” Works Why Not To Use “&&” What To Use Instead Of “&&” How “&&” Works A classic example of its use in React would be: function MyComponent({ condition }) { return ( <div> <h1>Title</h1> {condition && <ConditionalComponent />} </div> ); } Briefly summarized: if condition is a truthy value, <ConditionalComponent /> ...
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