JSFiddle - React, Tailwind, and code Playground

HTML

<div id="editableDiv" contenteditable="true">Initial Content</div>

JavaScript

var dict = ["hello", "hi", "hey"];
$(document).ready(function() {
    $('#editableDiv').on('keyup', function() {
        console.log(
        for(i in dict) {
            if(typeof dict[i] === 'string') {
                $('#editableDiv').html($('#editableDiv').html().replace(dict[i], '<b>' + dict[i] + '</b>'));
            }                                      
        }            
    });        
});