The CMS passes a variable as data-rest-url attribute to the React.js App:
<div id="reactjs-root" data-rest-url="http://my-ip-addess:8080/Rest-api-here">...</div>
If I add jQuery to my React.js App, then I can simply:
componentWillMount() {
const $reactRoot = $('#reactjs-root');
const restUrl = $reactRoot.attr('data-rest-url');
}
But adding jQuery just for this? How would you pass some variable from a CMS to your Single Page React App and read / parse / get it with react.js?
Consider passing your data attributes to your component as props instead of hard coding the root element ID within the component itself.
Rendering:
var rootElement = document.getElementById('reactjs-root');
ReactDOM.render(
<YourComponent resturl={rootElement.getAttribute('data-rest-url')}></YourComponent>,
rootElement
);
Within the component you can access the injected url:
componentWillMount() {
console.log(this.props.resturl)
}
This makes for a more reusable component that is decoupled from a specific element ID.
const reactRoot = document.getElementById('reactjs-root');
const restUrl = reactRoot.getAttribute('data-rest-url');
Also, avoid using $ in your variable name. You're likely to run into a lot of libraries that conflict with the $ you have used as a variable.