JSFiddle - React, Tailwind, and code Playground

HTML

<script type="text/javascript" src="http://momentjs.com/downloads/moment.min.js"></script>

JavaScript

var format = "DDHHmm MMM YY";
var dates = [
    "091500 Jan 14", // Valid date
    "321500 Jan 14", // Invalid day
    "092500 Jan 14", // Invalid hour
    "091561 Jan 14", // Invalid minute
    "091500 LOL 14"  // Invalid month
];

for(var i in dates) {
    if(moment(dates[i], format).isValid()){
        alert("\"" + dates[i] + "\" is valid");
    } else {
        alert("\"" + dates[i] + "\" is not Valid");
    }
}