JSFiddle - React, Tailwind, and code Playground

HTML

<div id="element1">
</div>
<div id="element2">
</div>
<p id="a"></p>
<p id="b"></p>
<p id="c"></p>

JavaScript

function $() {
    var elements = new Array();
    for (var i = 0; i < arguments.length; i++) {
        var element = arguments[i];
        if (typeof element == 'string') element = document.getElementById(element);
        if (arguments.length == 1) return element;
        elements.push(element);
    }
    return elements;
}

// Ví dụ:
var obj1 = document.getElementById('element1');
var obj2 = document.getElementById('element2');

function alertElements() {
    var i;
    var elements = $('a', 'b', 'c', obj1, obj2, 'd', 'e');
    for (i = 0; i < elements.length; i++) {
        alert(elements[i]);
    }
}

alertElements();