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facebook login button javascript onclick event

I can already assume that the facebook button type is causing this and over looking the premissions request in the code.

FIRST OPTION

FB.init(< appId : 'YOUR_APP_ID', status : true, // check login status cookie : true, // enable cookies to allow the server to access the session xfbml : true // parse XFBML >); // Check if the current user is logged in and has authorized the app FB.getLoginStatus(checkLoginStatus); // Login in the current user via Facebook and ask for email permission function authUser() < console.log("--- authUser ---"); FB.login(checkLoginStatus, ); > // Check the result of the user status and display login button if necessary function checkLoginStatus(response) < if(response && response.status == 'connected') < console.log('User is authorized'); >else if (response.status === 'not_authorized') < console.log('User is not_authorized . '); >else < console.log('User is not authorized'); document.getElementById('loginButton').style.display = 'inline-block'; >> 

SECOND OPTION

window.onload = function() < document.getElementById('fb-login').onclick = function() < var cb = function(response) < console.log('FB.login callback', response); if (response.status === 'connected') < console.log('User logged in'); >else < console.log('User is logged out'); >>; FB.login(cb, < scope: 'email' >); >; > 

• With 2 options for buttons:
• FaceBook Login
  • not using the same button ids in real code, this is just for example

  Источник

  JavaScript Button Login [closed]

  So I’m trying to create a JavaScript code for a button that allows me to login to a website that I have created. I have my database that the information will be retrieving the verification from. I just can’t seem to get the functionality to the button to do such a thing. So far all I have done was trying to reverse engineer the Facebook code login button but yet all I had on my hands after that was a big mess. I know I’m a bit over my head in this situation. JavaScript isn’t my best language. I have a button right now and that’s it.

  Sorry, I haven’t really tried anything. Just the basic, but nothing really to communicate with my server. I really don’t know how to tackle the situation. Should have added more clarity in the explanation, and I do apologize for that.

  have you considered using firebase as a server for what you trying to do? you will be able to create a form, have users register, login and redirect them to specific pages they can only view if logged in — firebase.com

  1 Answer 1

  This is not a JavaScript question but a design question. You are dealing with three levels here. In brief —

  1. View — Your html (button), css & JS
  2. Controller — Your space for action, validation and logic
  3. Data — Your data stored in your DB

  You’ve got the view (partially) and the Data layers figured out; however, you haven’t worked on your controller layer.

  Your controller layer should consume the data from the view (login details), validate the data, transform (if necessary) and authenticate against the DB.

  You can build your controller on the server (Java, nodeJS, etc.) or on the client (JavaScript AJAX).

  Hence, I suggest you figure out where do you want your code to live — on your server or in the browser. You should also keep in mind security.

  Источник

  How to validate login form on button click jquery/javascript?

  How to validate login form on button click.When i click on button then its calling javascript function button click,i need to first validate form,required then click button work. required not working.I want to validate before button click.

   
   
   
   
   
   
   
   
   
   
   
   
    
  Incorrect Username or Password 
   
   
   
  Lost password?  
   
     

  2 Answers 2

       
   
   
   
   
   
   
   
   
   
   
   
   
   
    
  Incorrect Username or Password 
   
   
   
   Lost password?    
   
      

  hi,thanks working but problem is it will go to other page and just show blank page which contains recordcount .I want to stay on this page because on wrong username and password i m showing lable ,just show label block on wrong username and password,

  if i use this ` $(«#btnlogin»).click(function (e)` then working fine but validation not works,it also call function if user not enter username and password

  Источник

  Login System in JavaScript with Source Code

  

  The Login System in JavaScript is a system project created using HTML, CSS, and JavaScript. JavaScript is a scripting language that enables you to create dynamically updating content, control multimedia, animate images, and pretty much everything else, can update and change both HTML and CSS.

  This simple mini project for Login System in JavaScript is complete and totally error free and also includes a downloadable Source Code for free, just find the downloadable source code below and click to start downloading. Before you start to click the download now first you must click the Run Quick Scan for secure Download.

  Talking about the highlights of this Login System framework, the page contains a title, a login frame (for username and password) and a login button that “submits” the input information. Note that I utilized citation marks around the accommodation since there’s no real accommodation. Not one or the other the username nor the password are sent to a server to be approved.

  Instead, when the client clicks the login button we approve that the username is “admin” and the password is “itsourcecode” utilizing JavaScript. In case they coordinate, at that point an alarm exchange is appeared and the page is reloaded (for the purpose of effortlessness); something else, we show an error message.

  I have here a suggested list of Best JavaScript Projects with Source Code Free to download and I’m sure this can help you to improve your skills in JavaScript programming and web development as a whole.

  To start creating a Login System in JavaScript, make sure that you have any platform in creating a JavaScript, bootstrap, and HTML installed in your computer, in my case I will use Sublime Text.

  Steps on how to create a Login System in JavaScript with Source Code

  

  First after installing sublime text IDE, click “open” to start.
  Step 2: Create a HTML file.

  

  Second click “file” and select “save as” and named it “index.html“
  Step 3: Create a JavaScript file.

  

  Third click “file” and select “save as” and named it “login.js“

  

  Fourth click “file” and select “save as” and named it “login.css“
  Step 5: The actual code.

  This code is for the index.html

  In the code given below, which is the code contains the interface of the application. This code will show the form that will be use in html.(Login System in JavaScript)

  This code is for the login.css

  In the code given below, which is for the code to design a login form background color, text and the box.(Login System in JavaScript)

  html < height: 100%; >body < height: 100%; margin: 0; font-family: Arial, Helvetica, sans-serif; display: grid; justify-items: center; align-items: center; background-color: darkblue; >main-holder < width: 50%; height: 70%; display: grid; justify-items: center; align-items: center; background-color: skyblue; border-radius: 7px; box-shadow: 0px 0px 5px 2px black; >login-error-msg-holder < width: 100%; height: 100%; display: grid; justify-items: center; align-items: center; >login-error-msg < width: 23%; text-align: center; margin: 0; padding: 5px; font-size: 12px; font-weight: bold; color: white; border: 1px solid #8a0000; background-color: red; opacity: 0; >error-msg-second-line < display: block; >login-form < align-self: flex-start; display: grid; justify-items: center; align-items: center; >.login-form-field::placeholder < color: #0033cc; >.login-form-field < border: none; border-bottom: 1px solid #0033cc; margin-bottom: 10px; border-radius: 3px; outline: none; padding: 0px 0px 5px 5px; >login-form-submit

  This code is for the login.js

  In the code given below, which is for the code creating a script function for login system.(Login System in JavaScript)

  const formlog = document.getElementById("login-form"); const BtnLog = document.getElementById("login-form-submit"); const ErrorMessage = document.getElementById("login-error-msg"); BtnLog.addEventListener("click", (e) => < e.preventDefault(); const username = formlog.username.value; const password = formlog.password.value; if (username === "admin" && password === "itsourcecode") < alert("You have successfully logged in."); location.reload(); >else >)

  Downloadable Source Code

  Summary

  In summary, this 2022 Login System in JavaScript with Source Code can be useful to students or professional who wants to learn web development using technologies like HTML, CSS and JavaScript. This project can also be modified to fit your personal requirements. Hope this project will help you to improve your skills. Happy coding!

  That’s how you create Login System in JavaScript with Source Code in your projects. You can always expand and try different ways in implementing the Login System in JavaScript in your JavaScript projects. In this Mini Project for Login System in JavaScript with Source Code is free to download and It is easy to understand and manipulate this project and use for education purpose only.

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  If you have any questions or suggestions about Login System in JavaScript with Source Code, please feel free to leave a comment below.

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