JSFiddle - React, Tailwind, and code Playground
by andrew rowe
HTML
<table style="border: 1px solid black;">
<tr><td>1</td><td class="board-cell" style="" id="board-cell-0-0">
<input class="board-input" style="" type="text" value="" name="cell-0-0" id="cell-0-0" maxlength="1" size="1"/></td><td>2</td></tr>
</table>
<table style="border: 1px solid black;">
<tr><td class="word-found word-cell-1" id="-0-0">7,7 T<br>To=2.</td></tr>
</table>
CSS
.word-cell-1 {background-color:red}
JavaScript
$("word-found").mouseover(function() {
id=$(this).attr("id");
$(this).addClass('cell-highlight' );
secondid = "#board-cell"+id;
alert(secondid)
$(secondid).addClass('cell-highlight');
}).mouseout(function() {
$(this).removeClass('cell-highlight' );
id=$(this).attr("id");
secondid = "#board-cell"+id;
$(secondid).removeClass('cell-highlight');
});