JSFiddle - React, Tailwind, and code Playground

HTML

<div>one.1</div>
<div>one.2</div>

<div id="Quote_app">
    <div>two</div>
    <div>three</div>
</div>

JavaScript

NodeList.prototype.forEach = function(f) {
    for(var i = 0; i < this.length; i++) {
        f.apply(null, [this[i]]);
    }
};
Array.prototype.forEach = HTMLCollection.prototype.forEach = NodeList.prototype.forEach;

NodeList.prototype.filter = function(f) {
    var results = [];
    for(var i = 0; i < this.length; i++) {
        if(f.apply(null, [this[i]])) {
            results.push(this[i]);
        }
    }
    return results;
};
Array.prototype.filter = HTMLCollection.prototype.filter = NodeList.prototype.filter;  

NodeList.prototype.hide = function() {
    this.forEach(function(e) {
        e.hide();
    });
};
Array.prototype.hide = HTMLCollection.prototype.hide = NodeList.prototype.hide;

NodeList.prototype.show = function() {
    this.forEach(function(e) {
        e.show();
    });
};
Array.prototype.show = HTMLCollection.prototype.show = NodeList.prototype.show;

Element.prototype.isVisible = function() {
    return this.style.visibility == 'visible' || this.style.visibility == '';
};

Element.prototype.show = function() {
    this.style.visibility = 'visible';
};

Element.prototype.hide = function() {
    this.style.visibility = 'hidden';
};

Element.prototype.toggle = function() {
    this.isVisible() ? this.hide() : this.show();
};

var Controls = document.getElementById("Quote_app").getElementsByTagName("div");
var Control = document.getElementsByTagName("div")[0];

Control.toggle();
Controls.filter(function(c) { 
    return c != Control && c.isVisible();
}).hide();