Develop a Quiz App with Javascript – Object Oriented Programming

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Debugging JavaScript:
https://www.youtube.com/watch?v=0a2M1uOnp98
Promises in JavaScript:
https://www.youtube.com/watch?v=MiW0xFthJIQ

how to add "multiple choices answer" and "drag and drop" question-answer please help

Great tutorial brother !! So I have an question please how to make random the question in the quiz I use the function random but not result.

If i want to change the number of question to 20 instead of 5 – what should i change.. i have tried many times, by just adding the number of questions with negative result. thanks in advance.

Quiz code https://youtu.be/NKfb6dQFaZM

nice one there !

Thank you for your explanation but you did not mention how to unlmit the number of questions. I have tried unfortunately could not find a solution. Could you hel me please?

I cannot populate my questions and answers..

why does the questions not show for me?

Won't show scores 🙁

The JavaScript part was not working for me like others on here, but then I rearranged the sorting of the JS links on my index.html and it worked. It should be listed top down in this order: controller.js, then question.js and finally app.js. Probably a stupid error that most can fix, but for new people on here like me this might be an issue. Hope this helps.

I would like to modify this quiz app code to ask questions from a subset of the questions array. What is the best way to do that?
Lets say you have 100 questions, and you want to randomly select 25 questions to ask.

I learned that I should check the comments before following the tutorial. Always read the reviews :'(

Getting an error of cannot find the property text in the app.js

Halfway through the video and I'm very uncomfortable with the var declarations that should've been using let instead. But other than that I like this video.

Don't understand 24:29 – "if(this.getQuestionIndex().correctAnswer(answer))". Is this chaining or something?

Thanks for the tutorial so much man

I followed the video beginning to end, and I get an error in the console:

Uncaught TypeError: cannot set property "innerHTML" of null
at populate (app.js:13)
at app.js:55

someone please help me find the disconnect

Thank you, this is great for practicing!

Hello, This Video has help me grasp more of js but my questions won't show up any idea why?

Dear sir I have applied self close to close the window after a time but it is not working after uploading over the network please help me to sort out this problem

amazing , 3 years later

Please can you share this code

use Brackets ..It is a lot better than Webstorm..Trust me.. Awais Mirza…

Thank you for the tutoral Awais!. Code works great. Also would be nice with better mic as others said :))

https://play.google.com/store/apps/details?id=com.alimiesiac.quizgenious

So much helpful for beginner

Good Construction but poor explanation, thanks anyways

Hi,

Can you share app.js code for randomised question set. What more modifications in the code can make the job simple. Its urgent, please reply soon.

Very good video. I knew a little about programming in JavaScript, but I learned a lot more – especially about objects

Nice app

Nice quiz

hello i'm student and i want to get exam hall seating arrange system html and java script source code so place send to me

Please I need help. Uncaught synthex Error identifier 'quiz' has already been declared in app js.
Need help. I am stucked here

Sir if we want to show a button on attempting all correct answers and vise versa. What will be the code? Kindly help me.

Very nice tutorial. Thank you so much for sharing!

how to mix the question every single time when u open the game ??

i stuck at 32:31 i can't show the choices inside the button.

Oay mere pyare laal, gole gape nonay haal…. bohat pyari video banai hai aap ne… dil khush kar diya… i liked your video as well as i subscribed too.

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