css pseudo code "li::before" in react inline style

Question

I have a React component called "ExplanationLists", I would like to add dynamic inline style into li html element with css pseudo code li::after, the way I can style the bullet-point with graphic better. For example,

li::before {
    content: dynamic_content;
}

However, I couldn't really make it happen. Any suggestion would be appreciated.

Below is the code I've written.

class ExplanationLists extends Component{
    populateHtml(){
        // asign lists data into variable "items"
        var items = this.props.items; 

        // loop though items and pass dynamic style into li element
        const html = items.map(function(item){
            var divStyle = {
                display: "list-item",
                listStyleImage: 
                    'url(' +  
                    '/images/icons/batchfield_fotograf_rosenheim_icon_' + 
                    item.icon +
                    '.png' +
                    ')'   
            };  

            // html templating 
            return (
                 <li style={divStyle}>
                   <h3 >{item.title}</h3>
                   <p>{item.desc}</p>
                 </li>
            );
        });

        // return html
        return html;
    }

    render(){
        return (
            <ul>
                {this.populateHtml()}
            </ul>
        )
    }
}

Answer 1

Refer to this link .

1. "&::before": { ...react style here }
2. you must have attribute content: `''`

example:

        content: {
            display: "flex",
            margin: 10,
            "&::before": {
                content: `''`,
                position: 'absolute',
                left: '-50px',
                top: '50px',
                width: '0',
                height: '0',
                border: '50px solid transparent',
                borderTopColor: 'red',
            }
        },

Hope this helps!