JSFiddle - React, Tailwind, and code Playground

JavaScript

function numbers()
{
    var x;
    var y = false;
    for(var i = 0; i < arguments.length; i++) {
        x = arguments[i];
        if(typeof x == 'string' || x == null){
            y = false;
            return y;
        } else{
            y = true;
        }
    }
    return y;
}