What steps should I take to correct the scoring system for multi-answer questions in my Angular quiz application?

Question

What steps should I take to correct the scoring system for multi-answer questions in my Angular quiz application?

When answering multiple-choice questions, it is important to select ALL of the correct options in order to increase your score. Selecting just one correct answer and then marking another as incorrect will still result in a score increase of 1, which is not ideal. The score should only increase when all correct answers are given. Similarly, if you initially select an incorrect answer followed by all correct answers, or a correct answer followed by an incorrect one and then another correct answer, the score should still increase. Single-answer questions should also increase the score as expected. Can you please help resolve this issue? You can view my app here: https://stackblitz.com/edit/angular-10-quiz-app

The current code snippet responsible for increasing the score can be found in src -> app -> containers -> quiz -> quiz.component.ts under the method checkIfAnsweredCorrectly:

checkIfAnsweredCorrectly() {
  if (this.question) {
    const correctAnswerFound = this.answers.find((answer) => {
      return this.question.options &&
        this.question.options[answer] &&
        this.question.options[answer]['selected'] &&
        this.question.options[answer]['correct'];
    });

    const answers = this.answers && this.answers.length > 0 ? this.answers.map((answer) => answer + 1) : [];
    this.quizService.userAnswers.push(this.answers && this.answers.length > 0 ? answers : this.answers);

    if (correctAnswerFound > -1 && 
        answers.length === this.quizService.numberOfCorrectAnswers) {
      this.sendCorrectCountToQuizService(this.correctCount + 1);
    }
  }
}

angular typescript

Answer 1

Answer №1

@integral100x

Ensure to modify the logic of your checkIfAnsweredCorrectly method in DependencyInjectionQuizComponent.

Make sure to verify that correctAnswerFound is greater than -1 as finding the element at position 0 in the array will cause the If loop to exit with a value of 0. Therefore, it is advisable to update the condition to check for greater than -1.

if (correctAnswerFound > -1) {
        this.sendCorrectCountToQuizService(this.correctCount + 1);
}

instead of

if (correctAnswerFound) {
    this.sendCorrectCountToQuizService(this.correctCount + 1);
}

Thank you

Answer 2

@integral100x

Ensure to modify the logic of your checkIfAnsweredCorrectly method in DependencyInjectionQuizComponent.

Make sure to verify that correctAnswerFound is greater than -1 as finding the element at position 0 in the array will cause the If loop to exit with a value of 0. Therefore, it is advisable to update the condition to check for greater than -1.

if (correctAnswerFound > -1) {
        this.sendCorrectCountToQuizService(this.correctCount + 1);
}

instead of

if (correctAnswerFound) {
    this.sendCorrectCountToQuizService(this.correctCount + 1);
}

Thank you

Answer 3

Answer №2

If you're facing issues with your app, consider separating the "right/wrong" logic from the "next button" logic for a simple solution.

Avoid having code like this:

if (!incorrectAnswerFound) {
  this.sendCorrectCountToQuizService(this.correctCount + 1);
}

Instead, structure your functions as follows:

advanceToNextQuestion() { ... }

and

addUpScores() { ... }

By keeping your logic separate and distinct, you can ensure smoother functioning of your app.

Answer 4

If you're facing issues with your app, consider separating the "right/wrong" logic from the "next button" logic for a simple solution.

Avoid having code like this:

if (!incorrectAnswerFound) {
  this.sendCorrectCountToQuizService(this.correctCount + 1);
}

Instead, structure your functions as follows:

advanceToNextQuestion() { ... }

and

addUpScores() { ... }

By keeping your logic separate and distinct, you can ensure smoother functioning of your app.

Answer 5

Answer №3

How can I determine the user's score based on their selected answers to a quiz? If they choose option (a), multiply by 4, if they select (b), multiply by 3, if they pick (c), multiply by 2, and if they go for (d), multiply by 1. I'm not looking for the correct answer.

quiz.html
=========

 <template>
<lightning-card title="BMI Quiz App">
<div class="slds-m-around_medium">
<template if:true={isSubmitted}>
<div class={isScoredFull}> Your Health Score is {correctAnswer} </div>
</template>
<template if:true={enablesmile1}>
<img src={GreenImage}  height="30px"
width="35px">
</template>
<template if:true={enablesmile2}>
    <img src={YellowImage}  height="30px"
    width="35px">
</template>
<template if:true={enablesmile3}>
<img src={RedImage}  height="30px"
width="35px">
</template>
<form>
<template for:each={questions} for:item="quiz">
<div key={quiz.id} class="slds-m-bottom_medium">

<div><strong>{quiz.id} :- {quiz.ques}</strong></div>
<div class="slds-grid slds-grid_vertical slds-m-bottom_x-small">

<div class="slds-col">
<input type="radio" name={quiz.id} value="a" onchange={changeHandler}/>
{quiz.answers.a}
</div>

<div class="slds-col">
<input type="radio" name={quiz.id} value="b" onchange={changeHandler}/>
{quiz.answers.b}
</div>

<div class="slds-col">
<input type="radio" name={quiz.id} value="c"  onchange={changeHandler}/>
{quiz.answers.c}
</div>

<div class="slds-col">
<input type="radio" name={quiz.id} value="d" onchange={changeHandler} />
{quiz.answers.d}
</div>
</div>
</div>
</template>

<div class="slds-grid slds-grid_align-center">
<lightning-button variant="brand" 
type="submit" label="Submit" 
title="Submit Quiz" 
class="slds-col slds-m-around_medium" 
disabled={allNotSelected}
onclick={submitHandler}>
</lightning-button>

<lightning-button variant="brand" 
type="reset" label="Reset" 
title="Reset Quiz" 
class="slds-col slds-m-around_medium" 
onclick={resetHandler}>
</lightning-button>
</div>

</form>
</div>
</lightning-card>
</template>

quiz.js
========

    import { LightningElement } from 'lwc';
import Green_Image from '@salesforce/resourceUrl/GreenImage';
import Yellow_Image from '@salesforce/resourceUrl/YellowImage';
import Red_Image from '@salesforce/resourceUrl/RedImage';

export default class BmiQuiz extends LightningElement {
     GreenImage=Green_Image;
     YellowImage=Yellow_Image;
     RedImage=Red_Image;

selected={}
correctAnswer=0
isSubmitted=false
enablesmile1=false;
enablesmile2=false;
enablesmile3=false;
optionvalue;

questions=[
{

    id:'1',
    ques:'I have felt cheerful and in good spirits ?',
    answers:{
    a:'All of the time.',
    b:'Most of the time.',
    c:'Half of the time.',
    d:'Some of the time.'
},
    correctAnswer:'b'
},

{
  
    id:'2',
    ques:'I have felt calm and relaxed ?',
    answers:{
        a:'All of the time.',
        b:'Most of the time.',
        c:'half of the time.',
        d:'Some of the time.'
    },
        correctAnswer:'b'
},

{
    id:'3',
    ques:'I have felt active and vigorous ?',
    answers:{
        a:'All of the time.',
        b:'Most of the time.',
        c:'half of the time.',
        d:'Some of the time.'
    },
        correctAnswer:'c'
},


{
    id:'4',
    ques:'I woke up feeling fresh and rested ?',
    answers:{
        a:'All of the time.',
        b:'Most of the time.',
        c:'Half of the time.',
        d:'Some of the time.'
    },
        correctAnswer:'d'
    },

{

    id:'5',
    ques:' My daily life has been filled with things that interest me ?',
    answers:{
        a:'All of the time.',
        b:'Most of the time.',
        c:'half of the time.',
        d:'Some of the time.'
    },
        correctAnswer:'b'
}]

get allNotSelected(){
    return !(Object.keys(this.selected).length===this.questions.length)
}

get isScoredFull(){
    return `slds-text-heading_large ${this.questions.length===this.correctAnswer?
        'slds-text-color_success':'slds-text-color_error'
    }`
}

changeHandler(event){
console.log("value",event.target.value)
console.log("name",event.target.name)
const{name,value}=event.target
this.selected={...this.selected,[name]:value}
 this.optionvalue=this.questions.filter(item=>this.selected[item.value])
console.log('optionvalue'+this.optionvalue)
}

submitHandler(event){
  event.preventDefault()
  let correct=  this.questions.filter(item=>this.selected[item.id]===item.correctAnswer)
  this.correctAnswer=correct.length
  this.isSubmitted=true
  console.log('correctAnswer',this.correctAnswer)
 

if(this.correctAnswer ==4){
    this.enablesmile1=true;
    this.enablesmile2=false;
    this.enablesmile3=false;
 }
 else if( this.correctAnswer==3 ){
   this.enablesmile2=true;
   this.enablesmile3=false;
   this.enablesmile1=false;
  }
 else if( this.correctAnswer==2 ){
    this.enablesmile3=true;
    this.enablesmile2=false;
    this.enablesmile1=false;


 }

}

resetHandler(){
    this.selected={}
    this.correctAnswer=0
    this.isSubmitted=false

}

}

Answer 6

How can I determine the user's score based on their selected answers to a quiz? If they choose option (a), multiply by 4, if they select (b), multiply by 3, if they pick (c), multiply by 2, and if they go for (d), multiply by 1. I'm not looking for the correct answer.

quiz.html
=========

 <template>
<lightning-card title="BMI Quiz App">
<div class="slds-m-around_medium">
<template if:true={isSubmitted}>
<div class={isScoredFull}> Your Health Score is {correctAnswer} </div>
</template>
<template if:true={enablesmile1}>
<img src={GreenImage}  height="30px"
width="35px">
</template>
<template if:true={enablesmile2}>
    <img src={YellowImage}  height="30px"
    width="35px">
</template>
<template if:true={enablesmile3}>
<img src={RedImage}  height="30px"
width="35px">
</template>
<form>
<template for:each={questions} for:item="quiz">
<div key={quiz.id} class="slds-m-bottom_medium">

<div><strong>{quiz.id} :- {quiz.ques}</strong></div>
<div class="slds-grid slds-grid_vertical slds-m-bottom_x-small">

<div class="slds-col">
<input type="radio" name={quiz.id} value="a" onchange={changeHandler}/>
{quiz.answers.a}
</div>

<div class="slds-col">
<input type="radio" name={quiz.id} value="b" onchange={changeHandler}/>
{quiz.answers.b}
</div>

<div class="slds-col">
<input type="radio" name={quiz.id} value="c"  onchange={changeHandler}/>
{quiz.answers.c}
</div>

<div class="slds-col">
<input type="radio" name={quiz.id} value="d" onchange={changeHandler} />
{quiz.answers.d}
</div>
</div>
</div>
</template>

<div class="slds-grid slds-grid_align-center">
<lightning-button variant="brand" 
type="submit" label="Submit" 
title="Submit Quiz" 
class="slds-col slds-m-around_medium" 
disabled={allNotSelected}
onclick={submitHandler}>
</lightning-button>

<lightning-button variant="brand" 
type="reset" label="Reset" 
title="Reset Quiz" 
class="slds-col slds-m-around_medium" 
onclick={resetHandler}>
</lightning-button>
</div>

</form>
</div>
</lightning-card>
</template>

quiz.js
========

    import { LightningElement } from 'lwc';
import Green_Image from '@salesforce/resourceUrl/GreenImage';
import Yellow_Image from '@salesforce/resourceUrl/YellowImage';
import Red_Image from '@salesforce/resourceUrl/RedImage';

export default class BmiQuiz extends LightningElement {
     GreenImage=Green_Image;
     YellowImage=Yellow_Image;
     RedImage=Red_Image;

selected={}
correctAnswer=0
isSubmitted=false
enablesmile1=false;
enablesmile2=false;
enablesmile3=false;
optionvalue;

questions=[
{

    id:'1',
    ques:'I have felt cheerful and in good spirits ?',
    answers:{
    a:'All of the time.',
    b:'Most of the time.',
    c:'Half of the time.',
    d:'Some of the time.'
},
    correctAnswer:'b'
},

{
  
    id:'2',
    ques:'I have felt calm and relaxed ?',
    answers:{
        a:'All of the time.',
        b:'Most of the time.',
        c:'half of the time.',
        d:'Some of the time.'
    },
        correctAnswer:'b'
},

{
    id:'3',
    ques:'I have felt active and vigorous ?',
    answers:{
        a:'All of the time.',
        b:'Most of the time.',
        c:'half of the time.',
        d:'Some of the time.'
    },
        correctAnswer:'c'
},


{
    id:'4',
    ques:'I woke up feeling fresh and rested ?',
    answers:{
        a:'All of the time.',
        b:'Most of the time.',
        c:'Half of the time.',
        d:'Some of the time.'
    },
        correctAnswer:'d'
    },

{

    id:'5',
    ques:' My daily life has been filled with things that interest me ?',
    answers:{
        a:'All of the time.',
        b:'Most of the time.',
        c:'half of the time.',
        d:'Some of the time.'
    },
        correctAnswer:'b'
}]

get allNotSelected(){
    return !(Object.keys(this.selected).length===this.questions.length)
}

get isScoredFull(){
    return `slds-text-heading_large ${this.questions.length===this.correctAnswer?
        'slds-text-color_success':'slds-text-color_error'
    }`
}

changeHandler(event){
console.log("value",event.target.value)
console.log("name",event.target.name)
const{name,value}=event.target
this.selected={...this.selected,[name]:value}
 this.optionvalue=this.questions.filter(item=>this.selected[item.value])
console.log('optionvalue'+this.optionvalue)
}

submitHandler(event){
  event.preventDefault()
  let correct=  this.questions.filter(item=>this.selected[item.id]===item.correctAnswer)
  this.correctAnswer=correct.length
  this.isSubmitted=true
  console.log('correctAnswer',this.correctAnswer)
 

if(this.correctAnswer ==4){
    this.enablesmile1=true;
    this.enablesmile2=false;
    this.enablesmile3=false;
 }
 else if( this.correctAnswer==3 ){
   this.enablesmile2=true;
   this.enablesmile3=false;
   this.enablesmile1=false;
  }
 else if( this.correctAnswer==2 ){
    this.enablesmile3=true;
    this.enablesmile2=false;
    this.enablesmile1=false;


 }

}

resetHandler(){
    this.selected={}
    this.correctAnswer=0
    this.isSubmitted=false

}

}

What steps should I take to correct the scoring system for multi-answer questions in my Angular quiz application?

Answer №1

Answer №2

Answer №3

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