JSFiddle - React, Tailwind, and code Playground

HTML

<title>Same word when missing letters</title>
<body><button id="gobutton">GO</button>
 <span id="spWords">Loading dictionary...</span><br>
 Word size: <input id="tbWordSize" size="3" value="4"> &nbsp; 
 Missing letters: <input id="tbLetters" size="3" value="1">
 <br>
 <div id="Info">---</div>
 <pre id="Output"></pre>
</body>

CSS

body{
    font-family: Sans;
    background: #9ac;
}
#gobutton {
    position: absolute;
    top: 1em;
    right: 2%;
}
span button, span input {
    font-size: .63em;
}
#Info {
    margin: 1em 0px .1em 0px;
    padding: .2em 1em .2em 1em;
    width: 80%;
    min-height: 4em;
    background: #bce;
    border-radius: .5em;
}
#Output {
    width:98%;
    overflow: auto;
}
#Output, #Info {
    border: 1px solid black;
    border-color: white black black white;
    box-shadow: 2px 2px 4px;
}

JavaScript

var gS={ /*   Global Store            */
    sharedDictUrl:'http://cartou.ch/sharedstuff/testdict.txt',
    tstop:{},
    steps:{},
};

/* Interface stuff */
Number.prototype.milsep = function(){ var o="",i=this.toFixed(0),m=undefined;
  while (m=i.match(/^(\d+)(\d{3})/)){ o="&#8239;"+m[2]+o,i=m[1];};return i+o;};
function initInterface() {
    document.getElementById('gobutton').addEventListener('click',go);
    window.addEventListener('resize',reHeightOutput);
    reHeightOutput();
    reqWords();    
}
function reHeightOutput() {
    document.getElementById('Output').
        setAttribute('style','height:'+
                     ( window.innerHeight- 22 -
                       document.getElementById('Output').offsetTop
                     ).toFixed(0) +"px");
}

/* Dictionary file load */
function loadWords(e) {
    gS.words = e.target.responseText.match(/[a-z]+/g);
    console.log( "Got the shared words file: " + gS.words.length);  
    document.getElementById('spWords').innerHTML = "Shared dict loaded: " +
        gS.words.length.milsep() + ' words.' +
        ' (Or use local file: <input type="file" id="chgDict" />)';
    document.getElementById('chgDict').addEventListener('change',readWordFile);
};
function readWordFile(e) {
    var f = e.target.files[0]; 
    if (f) {
        var r = new FileReader();
        r.onload = function(e) { 
            gS.words = e.target.result.match(/[a-z]+/g);
            console.log( "Got the local file " + f.name + ": "+ 
                         gS.words.length +" Words.");  
            document.getElementById('spWords').innerHTML = 'Local dict: <b>'+
                f.name +'</b> loaded : '+ gS.words.length.milsep()+' words. '+
                '(Or <button id="rvrt">revert to shared:</button>)';
            document.getElementById('rvrt').addEventListener('click',reqWords);
        };
        r.readAsText(f);
    } else console.log   ("Failed to load file");
}
function reqWords() {
    console.log("Request word...