JSFiddle - React, Tailwind, and code Playground

HTML

<div id="Editable1">Click on me for fun!</div>
<div id="Editable2">Me too!</div>
<form><input type="hidden" id="selected_div" /></form>

JavaScript

function edit_addon (event) {   
    div_id = this.id;

    $("#"+div_id).attr ('contentEditable', true)    //-- Use no semicolon here
                 .css ('color','#F00')
                 .css ('cursor','Text')
                 ;


    var old_div = $("input#selected_div").val();
    //alert(old_div);
    if (old_div)
        $("#"+old_div).css('color','#000');

    $("input#selected_div").val(div_id);
} 

$("div[id^='Editable']").click (edit_addon);