javascript - Dynamically load a stylesheet with React

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javascript - Dynamically load a stylesheet with React

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - Dynamically load a stylesheet with React

I'm building a CMS system for managing marketing landing pages. On the "Edit Landing Page" view, I want to be able to load the associated stylesheet for whichever landing page the user is editing. How could I do something like this with React?

My app is fully React, isomorphic, running on Koa. My basic component heirarchy for the page in question looks something like this:

App.jsx (has `<head>` tag)
└── Layout.jsx (dictates page structure, sidebars, etc.)
    └── EditLandingPage.jsx (shows the landing page in edit mode)

Data for the landing page (including the path of the stylesheet to load) is fetched asynchronously in EditLandingPage in ComponentDidMount.

Let me know if you need any additional info. Would love to get this figured out!

Bonus: I'd also like to unload the stylesheet when navigating away from the page, which I assume I can do the reverse of whatever answer comes my way in ComponentWillUnmount, right?

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1 Answer

深蓝 · Answer 1 · 2021-10-17T00:06:54+0000

Just update stylesheet's path that you want to be dynamically loaded by using react's state.

import * as React from 'react';

export default class MainPage extends React.Component{
    constructor(props){
        super(props);
        this.state = {stylePath: 'style1.css'};
    }

    handleButtonClick(){
        this.setState({stylePath: 'style2.css'});
    }

    render(){
        return (
            <div>
                <link rel="stylesheet" type="text/css" href={this.state.stylePath} />
                <button type="button" onClick={this.handleButtonClick.bind(this)}>Click to update stylesheet</button>
            </div>
        )
    }
};

Also, I have implemented it as react component. You can install via npm install react-dynamic-style-loader.
Check my github repository to examine:
https://github.com/burakhanalkan/react-dynamic-style-loader

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