Google+ Sign-In with JavaScript callback issue

Question

I am working on a function which allows users to sign in on my website with their Google account.

My code is based on the Google documentation (others signIn() options a

Answer 1

Try to register first call in some local variable and then process it

This quick solution helps me:

function login() {
  var initializedGoogleCallback = false
  gapi.auth.signIn({
    'callback': function (authResult) {
       if (!initializedGoogleCallback) {
         // after first call other will be ignored
         initializedGoogleCallback = true;
         if (authResult['status']['signed_in']) {
           console.log('Okay');
         } else {
           console.log('Error');
         }
       }
    }
  });
}

also you can add following code before call gapi.auth.signIn

window.removeEventListener('load')