JSFiddle - React, Tailwind, and code Playground

by Vedant_Terkar

HTML

<div id="xyz" onKeyDown="return disable(this,event);" contentEditable="true">
</div>

CSS

#xyz { font: 9.5pt serif; height:200px; border:1px dashed red; margin:10px; }

JavaScript

function disable(x,e){
   var ret=true;
    if(e.ctrlKey){
        switch(e.keyCode){
            case 66: //ctrl+B or ctrl+b
            case 98: ret=false;
                    break;
            case 73: //ctrl+I or ctrl+i
            case 105: ret=false;
                    break;
            case 85: //ctrl+U or ctrl+u
            case 117: ret=false;
                    break;
        }
    }
    return ret;
}