Uncaught TypeError: web.get_url is not a function

Question

When trying to execute the following code i got the mentioned error. Here is the snippet:

var clientContext = new SP.ClientContext.get_current();
var web = clientContext.get_web();
clientContext.load(web);
clientContext.executeQueryAsync(Get, Failed);

function Get()
    {
       alert(web.get_url());
    }
function Failed()
    {
       alert('Failed' + args.get_message());
    }

I've tried it on root site (/sites/root) and subsite (/sites/root/subsite/), still the same.

Thanks.

UPD

When trying to execute this snippet:

var clientContext = new SP.ClientContext.get_current();
console.log(clientContext)
var web = clientContext.get_web()
console.log(web)
var subsites = web.get_webs();
console.log(subsites)

clientContext.load(subsites);
clientContext.executeQueryAsync(function(s, a)
{   
    var userInfo = [];
    var siteenum = subsites.getEnumerator();
    while (siteenum.moveNext())       
        {
        var oweb = siteenum.get_current();
        var webtitle = oweb.get_title();
        userInfo.push(webtitle);
        }
    console.log(userInfo.join('')); 
}
);

i got the following:

SP.ClientContext {$r_0: Object, $1P_0: "/sites/root", $1O_0: Object, $8_0: SP.ClientRequest, $O_1: SP.Web…} SP.Web {$0_0: SP.ClientContext, $4_0: SP.ClientObjectData} SP.WebCollection {$0_0: SP.ClientContext, $4_0: SP.ClientObjectData}

site1 site2 site3

But when adding

var weburl = oweb.get_url();
userInfo.push(webtitle + weburl);

The error is still the same:

Uncaught TypeError: oweb.get_url is not a function

Answer 1

Probably the "sp.js" isn't loaded yet or isn't loaded correctly.

Try to use this code**:

var clientContext;
var website;

// Make sure the SharePoint script file 'sp.js' is loaded before your
// code runs.
SP.SOD.executeFunc('sp.js', 'SP.ClientContext', sharePointReady);

// Create an instance of the current context and get the website.
function sharePointReady() {
    clientContext = SP.ClientContext.get_current();
    website = clientContext.get_web();

    clientContext.load(website);
    clientContext.executeQueryAsync(onRequestSucceeded, onRequestFailed);
}
function onRequestSucceeded() {
    alert('URL of the website: ' + website.get_url());
}
function onRequestFailed(sender, args) {
    alert('Error: ' + args.get_message());
}

**The example in this link: https://msdn.microsoft.com/en-us/library/office/jj246877.aspx