JSFiddle - React, Tailwind, and code Playground

JavaScript

var nums = [];

nums.push = function(n) {
    if (isInt(n))
        Array.prototype.push.call(this, n);
}

nums.push(2);
nums.push(5);
nums.push(9);
nums.push(3.14);
nums.push('dawg');

document.body.innerHTML = JSON.stringify(nums);





function isInt(n) {
   return typeof n === 'number' && n % 1 == 0;
}