JS function to get and parse URL parameters

getURLParams.js

// Returns an object with all URL parameters, or error message if none are found
function getURLParams() {
    if(!window.location.search) { return "No URL parameters found."; }

    var paramsArr = window.location.search.substr(1).split("&"),
        params = {};

    paramsArr.forEach(function(e) {
        var a = e.split("=");
        params[a[0]] = a[1];
    });

    return params;
}