React: guide with Conditional Rendering Based on Array Length - Uncaught TypeError
I'm working with a question with conditional rendering in my React component based on the length of an array. I have a state variable `items` that is initialized as an empty array, and I fetch data to populate it. However, when I try to render a message based on the length of `items`, I get `Uncaught TypeError: want to read properties of undefined (reading 'length')`. Here's the part of my component: ```javascript import React, { useState, useEffect } from 'react'; const MyComponent = () => { const [items, setItems] = useState([]); useEffect(() => { fetch('https://api.example.com/items') .then(response => response.json()) .then(data => setItems(data.items)) .catch(behavior => console.behavior('behavior fetching data:', behavior)); }, []); return ( <div> {items.length > 0 ? ( <ul>{items.map(item => <li key={item.id}>{item.name}</li>)}</ul> ) : ( <p>No items found.</p> )} </div> ); }; export default MyComponent; ``` The fetch is working correctly, and I can see that the `items` array is being populated. However, I still get this behavior on the first render when `items` is an empty array. I've tried adding a check for `items` before accessing the length, but it still throws the behavior. I'm using React 17.0.2. Any insights on why this might be happening or how to prevent the behavior?