I am trying to add a JS code in page but it doesn’t work.
My code:
// Creating questionss and answers
//*****************************************************************************
var question1 = {
question: “”,
answers: [“2”, “1”, “5”, “9”],
correct: 0
};
var question2 = {
question: “3-3 equal to?”,
answers: [‘3’, ‘1’, ‘0’, ‘7’],
correct: 2
};
// create an array of objects
var questions = [question1, question2];
// Initialize variables
//------------------------------------------------------------------
var tags;
var tagsClass = ‘’;
var liTagsid = [];
var correctAns = 0;
var quizPage = 1;
var currentIndex = 0;
var currentQuestion = questions[currentIndex];
var prevousQuestion;
var previousIndex = 0;
var ulTag = document.getElementsByTagName(‘ul’)[0];
var button = document.getElementById(‘quizsubmit’);
var questionTitle = document.getElementById(‘question’);
//save class name so it can be reused easily
//if I want to change it, I have to change it one place
var classHighlight = ‘selected’;
// Display Answers and hightlight selected item
//------------------------------------------------------------------
function showQuestions (){
if (currentIndex != 0) {
// create again submit button only for next pages
ulTag.innerHTML =’’;
button.innerHTML = ‘Submit’;
button.className = ‘submit’;
button.id = ‘submit’;
//update the number of questions displayed
document.getElementById('quizNumber').innerHTML = quizPage;
}
//Display Results in the final page
if (currentIndex == (questions.length)) {
ulTag.innerHTML = ‘’;
document.getElementById(‘question’).innerHTML = ‘’;
showResults();
return
}
questionTitle.innerHTML = currentQuestion.question;
console.log(currentQuestion.question);
// create a for loop to generate the answers and display them in the page
for (var i = 0; i < currentQuestion.answers.length; i++) {
// creating answers
var newAns = document.createElement(‘li’);
newAns.id = ‘ans’+ (i+1);
newAns.className = “notSelected”;
var textAns = document.createTextNode(currentQuestion.answers[i]);
newAns.appendChild(textAns);
var addNewAnsHere = document.getElementById(‘answer’);
addNewAnsHere.appendChild(newAns);
console.log(currentQuestion.answers[i]);
}
//.click() will return the result of $(’.notSelected’)
var $liTags = $(’.notSelected’).click(function(list) {
list.preventDefault();
//run removeClass on every element
//if the elements are not static, you might want to rerun $(’.notSelected’)
//instead of the saved $litTags
$liTags.removeClass(classHighlight);
//add the class to the currently clicked element (this)
$(this).addClass(classHighlight);
//get id name of clicked answer
for (var i = 0; i < currentQuestion.answers.length ; i++) {
// console.log(liTagsid[i]);
if($liTags[i].className == "notSelected selected"){
//store information to check answer
tags = $liTags[i].id;
// tagsClass = $LiTags.className;
console.log(tags);
tagsClassName = $liTags[i];
}
}
});
//check answer once it has been submitted
button.onclick = function (){ checkAnswer()};
}
//self calling function
showQuestions();
// Show Correct Answer
//------------------------------------------------------------------
function checkAnswer (){
// get selected list
var selectedItem = document.getElementById(tags);
// check that an answer has been selected
if (selectedItem == undefined) {
alert(“Please selected an answer!”)
return
} else {
// get user answer if form of text
var userAns = selectedItem.innerHTML;
button.onclick = function (){ checkAnswer()};
}
// change the background of the answer according to the Results
if (userAns == currentQuestion.answers[currentQuestion.correct]) {
console.log("Correct! The answer is: "+ userAns);
// change color of selected item by changing className
selectedItem.className = ‘correct’;
// count the number of correct answers
correctAns++;
console.log(correctAns);
} else {
console.log("Wrong! The corrent answer is: "+ currentQuestion.answers[currentQuestion.correct]);
//change the background of the wrong answer
selectedItem.className = ‘wrong’;
//hightlight the right answer if the user got it wrong
//change the class name of the correct answer
ulTag.getElementsByTagName(‘li’)[currentQuestion.correct].className = ‘correct’;
console.log(currentQuestion.answers[currentQuestion.correct]);
}
// Create a next Question button once the answer has been submitted
button.innerHTML = ‘Next’;
button.className = ‘next’;
button.id = ‘next’;
prevousQuestion = currentQuestion;
quizPage++;
currentIndex++;
currentQuestion = questions[currentIndex];
// Start with the next question once the “Next” button has been clicked
button.onclick = function (){showQuestions()};
return
}
// Final score
//------------------------------------------------------------------
function showResults () {
//deleting page number
document.getElementById(‘quizpages’).innerHTML=’’;
//$(".fullReset").toggleClass(“hide”);
$(’#fullReset’).toggle();
var fullReset = document.getElementById(‘fullReset’);
fullReset.addEventListener('click', function(e) {
location.reload();
}, false);
// Change Title
questionTitle.innerHTML = ‘
Your Score
’;// Get the area that will be used to display the user’s score
var newInfo = document.getElementById(‘quiz-results’);
//Change the id and className of the area for the circle
newInfo.innerHTML = ‘’;
newInfo.id = ‘circle’;
newInfo.className = ‘circle’;
//Create a Div for the fill element
var newDiv = document.createElement(‘div’);
newDiv.className = ‘fill’;
var addHere = document.getElementById(‘circle’);
addHere.appendChild(newDiv);
// add the score to the circle
var newScore = document.createElement(‘h3’);
newScore.className = ‘score’;
var textScore = document.createTextNode(Math.floor((correctAns/questions.length)*100) + ‘%’);
newScore.appendChild(textScore);
addHere.appendChild(newScore);
//use jquary to grab the text of the score
var score = $(".score").text();
//fill the circle in base of the score
$(".fill").css(“height”,score);
if (correctAns >= 5) {
var newCongrats = document.createElement(‘p’);
var textCongrats = document.createTextNode(‘Congratulations! You did a Good Job!’)
newCongrats.appendChild(textCongrats);
document.getElementById(‘display-area’).appendChild(newCongrats);
confettiEffect();
}
}
// Confetti Effect by Gtibo “Confetti Party”
//------------------------------------------------------------------
function confettiEffect (){
//grabing area to create the effect
canvas = document.getElementById(“canvas”);
context = canvas.getContext(“2d”);
width = canvas.width = window.innerWidth;
height = canvas.height = window.innerHeight;
// creating the tabel
particle = [];
particleCount = 0,
gravity = 0.3,
colors = [
‘#f44336’, ‘#e91e63’, ‘#9c27b0’, ‘#673ab7’, ‘#3f51b5’,
‘#2196f3’, ‘#03a9f4’, ‘#00bcd4’, ‘#009688’, ‘#4CAF50’,
‘#8BC34A’, ‘#CDDC39’, ‘#FFEB3B’, ‘#FFC107’, ‘#FF9800’,
‘#FF5722’, ‘#795548’
];
for( var i = 0; i < 300; i++){
particle.push({
x : width/2,
y : height/2,
boxW : randomRange(5,20),
boxH : randomRange(5,20),
size : randomRange(2,8),
spikeran:randomRange(3,5),
velX :randomRange(-8,8),
velY :randomRange(-50,-10),
angle :convertToRadians(randomRange(0,360)),
color:colors[Math.floor(Math.random() * colors.length)],
anglespin:randomRange(-0.2,0.2),
draw : function(){
context.save();
context.translate(this.x,this.y);
context.rotate(this.angle);
context.fillStyle=this.color;
context.beginPath();
context.fillRect(this.boxW/2*-1,this.boxH/2*-1,this.boxW,this.boxH);
context.fill();
context.closePath();
context.restore();
this.angle += this.anglespin;
this.velY*= 0.999;
this.velY += 0.3;
this.x += this.velX;
this.y += this.velY;
if(this.y < 0){
this.velY *= -0.2;
this.velX *= 0.9;
};
if(this.y > height){
this.anglespin = 0;
this.y = height;
this.velY *= -0.2;
this.velX *= 0.9;
};
if(this.x > width ||this.x< 0){
this.velX *= -0.5;
};
},
});
}
function drawScreen(){
context.globalAlpha = 1;
for( var i = 0; i < particle.length; i++){
particle[i].draw();
}
}
function loadImage(url){
var img = document.createElement("img");
img.src=url;
return img;
}
function update(){
context.clearRect(0,0,width,height);
drawScreen();
requestAnimationFrame(update);
}
update();
function randomRange(min, max){
return min + Math.random() * (max - min );
}
function randomInt(min, max){
return Math.floor(min + Math.random()* (max - min + 1));
}
function convertToRadians(degree) {
return degree*(Math.PI/180);
}
function drawStar(cx, cy, spikes, outerRadius, innerRadius,color) {
var rot = Math.PI / 2 * 3;
var x = cx;
var y = cy;
var step = Math.PI / spikes;
context.strokeSyle = "#000";
context.beginPath();
context.moveTo(cx, cy - outerRadius)
for (i = 0; i < spikes; i++) {
x = cx + Math.cos(rot) * outerRadius;
y = cy + Math.sin(rot) * outerRadius;
context.lineTo(x, y)
rot += step
x = cx + Math.cos(rot) * innerRadius;
y = cy + Math.sin(rot) * innerRadius;
context.lineTo(x, y)
rot += step
}
context.lineTo(cx, cy - outerRadius)
context.closePath();
context.fillStyle = color;
context.fill();
}
}