Get Created Date of Current Web using jsom in SharePoint

This code snippet contains java script code to retrieve the creation date of current web site.

//Author: Shantha Kumar T
//Property used: SP.Web.created (sp.js)
//Supports SharePoint 2010 + and SharePoint Online

function getWebCreationDate() {
    var clientContext = new SP.ClientContext();
    oWeb = clientContext.get_web();
    clientContext.load(oWeb);

    clientContext.executeQueryAsync(
        Function.createDelegate(this, function() {
            //The below line returns the created date of website in current locale format
            alert(oWeb.get_created());
        }),
        Function.createDelegate(this, function(sender, args) {
            alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
        }));
}

function injectMethod() {
    getWebCreationDate();
}
ExecuteOrDelayUntilScriptLoaded(injectMethod, "sp.js");