JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" value="5 Items" onclick="test()">
<input type="button" value="6 Items" onclick="arrayOfOandZ(6)">
<input type="button" value="7 Items" onclick="arrayOfOandZ(7)">

JavaScript

function test() {
    alert("TEST");
}

function arrayOfOandZ (size) {
    var arrayOFOnZ = new Array(size);
    //Fill array
    for(var x = 0; x < size; x++){
        arrayOfOnZ[x] = size % 2;
    }
    alert(arrayOFOnZ.join('\n'));
}