In my React project, there is a component called ResultList which is used to display products in a gallery format.
The challenge I'm facing is determining the appropriate number of products to show per row based on the available width for the ResultList. This is crucial because other elements like sidebars and filters may also appear alongside the ResultList, affecting its width. As a result, the width of the ResultList component is responsive and can vary.
Currently, I have implemented code to fetch the element's width, but it doesn't work during the initial render. This makes sense since the element hasn’t been created yet and the ref isn't assigned. But how do I determine the product quantity to display on the first render without knowing the width of the component?
Visual Representation:
If you refer to the image below:
The ResultList corresponds to Item2
https://i.stack.imgur.com/HULVW.gif
Query:
Is there a way to access the width of Item2 during the initial render? If not, how can I hide it until the width is determined? Additionally, are there alternative methods to retrieve the width of a responsive element other than using window.getComputedStyle ?
CodeSandbox Link:
https://codesandbox.io/s/wizardly-blackburn-f1p7j
Full Code:
import React, { useRef, useState } from "react";
import ReactDOM from "react-dom";
import styled from "styled-components";
const S = {};
S.Container_DIV = styled.div`
display: flex;
height: 150px;
`;
S.FlexItem1 = styled.div`
flex: 0 0 200px;
background-color: lightblue;
`;
S.FlexItem2 = styled.div`
flex: 1 1 80%;
background-color: lightcoral;
`;
S.FlexItem3 = styled.div`
flex: 0 0 160px;
background-color: lightgreen;
`;
function App() {
const itemRef = useRef(null);
const [boolean, setBoolean] = useState(false);
return (
<React.Fragment>
<S.Container_DIV>
<S.FlexItem1>Item 1</S.FlexItem1>
<S.FlexItem2 ref={itemRef}>Item 2</S.FlexItem2>
<S.FlexItem3>Item 3</S.FlexItem3>
</S.Container_DIV>
<div>
<br />
Item2 width is:{" "}
{itemRef.current && window.getComputedStyle(itemRef.current).width}
</div>
<div>
<button onClick={() => setBoolean(prevState => !prevState)}>
Force Update
</button>
</div>
</React.Fragment>
);
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);