simple-highlighter-part-6.js

let highlight = (word) => {
    //get web page contents
    let str = document.body.innerHTML.toString();
    //search and replace
    str = str.replaceAll( new RegExp(word, 'gi'), `<span style='background-color:red;color:#fff'>${word}</span>` );
    //rebuild the webpage
    document.body.innerHTML = str;
}
//invoke function
highlight("Simon");