JSFiddle - React, Tailwind, and code Playground

HTML

<div><a href="/a-link-to-a-porsche-page">This is a link to a porsche page</a></div>

CSS

.highlighted {
    color: #ff0000;
}

JavaScript

jQuery.fn.highlight = function (str, className) {
    var regex = new RegExp(str, "gi");

    return this.each(function () {
        checkHighlight(this);
    });
    
    function checkHighlight(obj) {
        var children = $(obj).children();
        if(children.length == 0) {
            doHighlight(obj);
        } else {
            children.each(function() {
                checkHighlight(this);
            });
        }
    }
    
    function doHighlight(obj) {
        obj.innerHTML = obj.innerHTML.replace(regex, function(matched) {return "<span class=\"" + className + "\">" + matched + "</span>";});
    }
};


$(document).ready(function() {
    $("div").highlight("porsche", "highlighted");
});