setState is not a function
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React Common Mistakes
React Errors: Common Mistakes and How to Fix Them
Introduction:
React is a popular JavaScript library for building user interfaces, but even experienced developers encounter common errors. In this guide, we will explore frequent React issues and offer solutions to help you resolve them quickly.
Invariant Violation: Minified React error #130
The Problem:
This error occurs when you try to render more than one child element without wrapping them in a parent container:
function MyComponent() {
return (
<div>First Element</div>
<div>Second Element</div> // Error: Invariant Violation
);
}
The Solution:
To fix this, wrap the child elements in a single parent element, such as a div or a React Fragment:
function MyComponent() {
return (
<div>
<div>First Element</div>
<div>Second Element</div>
</div>
);
}
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