I have part of a game where the cursor is supposed to "slow down" when it passes over certain divs. I'm using a function that can detect a collision with the div. This works fine when the cursor meets the first div, but it doesn't work at all on the second div.
Check out this jsFiddle for a better idea of what I'm talking about. Pass the cursor over the first white block (class='thing') on the left and it slows down. Pass the cursor over the other block (also class='thing'), and nothing happens. I need this collision function to work on all divs where class='thing'.
HTML
<div id='cursor'>
</div>
<div class='thing' style='width:70px; height:70px; background: #fff; position: absolute; bottom: 350px; right: 800px; z-index: -1;'>
</div>
<div class='thing' style='width:70px; height:70px; background: #fff; position: absolute; bottom: 200px; right: 400px; z-index: -1;'>
</div>
JS
(function collide(){
var newInt = setInterval(function() {
function collision($cursor, $thing) {
var x1 = $cursor.offset().left;
var y1 = $cursor.offset().top;
var h1 = $cursor.outerHeight(true);
var w1 = $cursor.outerWidth(true);
var b1 = y1 + h1;
var r1 = x1 + w1;
var x2 = $thing.offset().left;
var y2 = $thing.offset().top;
var h2 = $thing.outerHeight(true);
var w2 = $thing.outerWidth(true);
var b2 = y2 + h2;
var r2 = x2 + w2;
// change 12 to alter damping higher is slower
var varies = 12;
if (b1 < y2 || y1 > b2 || r1 < x2 || x1 > r2){
} else {
varies = 200;
console.log(varies);
}
$xp += (($mouseX - $xp)/varies);
$yp += (($mouseY - $yp)/varies);
$("#cursor").css({left:$xp +'px', top:$yp +'px'});
}
$(collision($('#cursor'), $('.thing')));
//$('.result').text(collision($('#cursor'), $('.thing')));
}, 20);
})();
$thing is a collection of elements, like you want, but the problem here is that you ask specific attributes from $thing like offset().left;, which can not return more than one number, therefor it just takes the first. What you should do instead is use an .each() function to loop over all the elements in $thing.
$thing.each( function( index, element ){
//your code for each thing here
});
When you are selecting element by class name(in your case using .thing) in jQuery you will get an array of elements and collision() function will take first element in an array. so to overcome this you need to uniquely select both the elements this can be done using id as a selector,You can change your code like below to work it as expected
<div id='track'>
<div class = 'container'>
<div id='cursor' class='cursor'>
</div>
<div class='thing' id="a1" style='width:70px; height:70px; background: #fff; position: absolute; bottom: 175px; right: 400px; z-index: -1;'>
</div>
<div class='thing' id="a2" style='width:70px; height:70px; background: #fff; position: absolute; bottom: 100px; right: 200px; z-index: -1;'>
</div>
</div>
</div>
(function cursorMapping(){
var $mouseX = 0, $mouseY = 0;
var $xp = 0, $yp =0;
$(document).mousemove(function(e){
$mouseX = e.pageX;
$mouseY = e.pageY;
});
function showCoords(event) {
var x = event.clientX;
var y = event.clientY;
var coor = "X: " + x + ", Y: " + y;
}
var timestamp = null;
var lastMouseX = null;
var lastMouseY = null;
var mrefreshinterval = 500; // update display every 500ms
var lastmousex=-1;
var lastmousey=-1;
var lastmousetime;
var mousetravel = 0;
var lastmousetravel = 0;
var speed;
var marker1 = 1;
var marker2 = 1;
var timer = setInterval(function(){
marker1;
marker2;
}, 20);
$(function() {
var $speedometer = $('#speed'),
_speed = 0;
$('#track').cursometer({
onUpdateSpeed: function thisSpeed(speed) {
_speed = speed;
$speedometer.text(Math.ceil(speed * 100)/100);
},
updateSpeedRate: 20
});
});
var thisInterval = setInterval(function FXInterval(){
speed = $('#speed').text();
$('#cursor').css({'background-color': '#CE7A7A'});
}, 20);
$('html').mousemove(function(e) {
var mousex = e.pageX;
var mousey = e.pageY;
if (lastmousex > -1)
mousetravel += Math.max( Math.abs(mousex-lastmousex), Math.abs(mousey-lastmousey) );
lastmousex = mousex;
lastmousey = mousey;
var speed = lastmousex + lastmousey;
setTimeout(function(){
lastmousetravel = mousetravel;
}, 20);
});
(function collide(){
var newInt = setInterval(function() {
function collision($cursor, $thing) {
var x1 = $cursor.offset().left;
var y1 = $cursor.offset().top;
var h1 = $cursor.outerHeight(true);
var w1 = $cursor.outerWidth(true);
var b1 = y1 + h1;
var r1 = x1 + w1;
var x2 = $thing.offset().left;
var y2 = $thing.offset().top;
var h2 = $thing.outerHeight(true);
var w2 = $thing.outerWidth(true);
var b2 = y2 + h2;
var r2 = x2 + w2;
// change 12 to alter damping higher is slower
var varies = 12;
if (b1 < y2 || y1 > b2 || r1 < x2 || x1 > r2){
} else {
varies = 200;
console.log(varies);
}
$xp += (($mouseX - $xp)/varies);
$yp += (($mouseY - $yp)/varies);
$("#cursor").css({left:$xp +'px', top:$yp +'px'});
}
$(collision($('#cursor'), $('#a1')));
$(collision($('#cursor'), $('#a2')));
}, 20);
})();
})();
Related
I have a script made so that I can color the screen by moving the cursor. Now I would like this text to change to another text when you hover over it.
function drawAnimation() {
var yellowBrush = new Image();
yellowBrush.src = 'wp-content/themes/starter/assets/images/brush-yellow.png';
var drawCanvas = document.getElementById('hero__canvas');
var canvasOverlay = document.getElementById('hero__headings');
drawCanvas.width = drawCanvas.offsetWidth;
drawCanvas.height = drawCanvas.offsetHeight;
var ctx = drawCanvas.getContext('2d');
ctx.lineJoin = ctx.lineCap = 'round';
var lastPoint = { x: 0, y: 0 },
brushColor = yellowBrush;
function distanceBetween(point1, point2) {
return Math.sqrt(Math.pow(point2.x - point1.x, 2) + Math.pow(point2.y - point1.y, 2));
}
function angleBetween(point1, point2) {
return Math.atan2(point2.x - point1.x, point2.y - point1.y);
}
canvasOverlay.onmouseenter = function (e) {
var offsetCheck = window.pageYOffset + window.innerHeight - document.querySelector('.hero').clientHeight;
var offset = offsetCheck > 0 ? offsetCheck : 0;
lastPoint = { x: e.clientX, y: e.clientY + offset };
};
canvasOverlay.onmousemove = function (e) {
var offsetCheck = window.pageYOffset + window.innerHeight - document.querySelector('.hero').clientHeight;
var offset = offsetCheck > 0 ? offsetCheck : 0;
var currentPoint = { x: e.clientX, y: e.clientY + offset };
var dist = distanceBetween(lastPoint, currentPoint);
var angle = angleBetween(lastPoint, currentPoint);
for (var i = 0; i < dist; i++) {
x = lastPoint.x + (Math.sin(angle) * i) - 25;
y = lastPoint.y + (Math.cos(angle) * i) - 105;
ctx.drawImage(brushColor, x, y);
}
lastPoint = currentPoint;
};
}
jQuery(document).ready(function ($) {
drawAnimation();
});
.brush::before {
position: absolute;
content: 'w marketingu';
color: #ffdd00;
font-size: 80px;
top: 0;
left: 0;
z-index: 1;
}
.brush::after {
position: absolute;
content: 'w brandingu i digital';
color: #ffffff;
font-size: 80px;
top: 0;
left: 0;
z-index: 1;
}
<section
class="hero">
<div id="hero__animation_container" class="hero__animation_container">
<canvas id="hero__canvas" class="hero__canvas"></canvas>
<div id="hero__headings" class="hero__headings flex flex-col justify-center items-start">
<img class="absolute top-0 -right-48 rotate-90 z-10" src="{{theme.link}}/assets/images/icons/dots-references.png" alt=""/>
<div class="heading Container">
<p class="">Wiemy, co działa</p>
<p class="brush"></p>
</div>
</div>
</div>
the effect I want to achieve in the attachment:
I have no idea how to go about it, I tried to combine something with mix-blend but it will not solve the problems. Anyone able to help?
I am trying to produce a movement on a circle of some rectangular divs. I want that if a div is dragged near another div, the second div move within the first one the user is dragging. Is there a plugin that do this or I need to produce something calculating the position of 2 divs. And, the rectangular divs can be also 10 divs not only 2.
Here my solution.
<html>
<head>
<style type="text/css">
div#dynamic-container{width:400px; height:400px; background-color: lightgoldenrodyellow; position:relative; border: 1px solid black;}
div#innerCircle{width: 380px; height: 380px; position: absolute; left: 10px; top:10px; background-color: lightcoral;
border-radius:190px; -moz-border-radius: 190px; -webkit-border-radius: 190px;}
div.marker{width: 20px; height:20px; background: black; position:absolute; left:195px; cursor: pointer;
-moz-transform:rotate(45deg);
-moz-transform-origin:5px 200px;
transform:rotate(45deg);
transform-origin:5px 200px;
-ms-transform:rotate(45deg);
-ms-transform-origin:5px 200px;
-webkit-transform:rotate(45deg);
-webkit-transform-origin:5px 200px;
z-index:17;
}
</style>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script src="/lib/jquery.overlaps.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
function rotateAnnotationCropper(offsetSelector, xCoordinate, yCoordinate, cropper){
//alert(offsetSelector.left);
var x = xCoordinate - offsetSelector.offset().left - offsetSelector.width()/2;
var y = -1*(yCoordinate - offsetSelector.offset().top - offsetSelector.height()/2);
var theta = Math.atan2(y,x)*(180/Math.PI);
var cssDegs = convertThetaToCssDegs(theta);
var rotate = 'rotate(' +cssDegs + 'deg)';
cropper.css({'-moz-transform': rotate, 'transform' : rotate, '-webkit-transform': rotate, '-ms-transform': rotate});
$('body').on('mouseup', function(event){ $('body').unbind('mousemove')});
}
function convertThetaToCssDegs(theta){
var cssDegs = 90 - theta;
return cssDegs;
}
$(document).ready(function(){
//$('.marker-1').draggable();
var items = $('#dynamic-container').find('.marker');
var i = 0;
var cssDegs = 15;
var rotate = 'rotate(' +cssDegs + 'deg)';
for (i; i<items.length; i++){
if(i == 0){
cssDegs = cssDegs*i;
}else{
cssDegs = cssDegs+20;
}
console.log("cssDegs: "+cssDegs);
rotate = 'rotate(' +cssDegs + 'deg)';
//Imposto i gradi a tutti i punti per differenziarli al document ready
$(items[i]).css({'-moz-transform': rotate, 'transform' : rotate, '-webkit-transform': rotate, '-ms-transform': rotate});
//items[i].css("background-color","blue");
}
console.log(items);
$('.marker').on('mousedown', function(){
$('body').on('mousemove', function(event){
//rotateAnnotationCropper($('#innerCircle').parent(), event.pageX,event.pageY, $('.marker'));
//rotateAnnotationCropper($('#innerCircle').parent(), event.pageX,event.pageY, $(event.target));
rotateAnnotationCropper($('#innerCircle').parent(), event.pageX,event.pageY, $(this).find('.marker-1'));
var markers = $(this).find('.marker');
var over = overlap(markers[0],$('#container'));
if(markers[0] != over){
console.log($(markers[0]));
console.log(over);
}else{
console.log('not over');
}
});
});
$('body').on('mouseup', function(event){ $('body').unbind('mousemove')});
});
function overlap (div1, div2){
var res = $(div1).overlaps($(div2));
return res;
}
</script>
</head>
<body>
<div id="container">
<div id ="dynamic-container">
<div class ="marker marker-1"></div>
<div class ="marker marker-2"></div>
<div id ="innerCircle"></div>
</div>
</div>
</body>
At the moment this snippet produce a circle with 2 divs. That can move on the circle border. I want that if the div the user drag a div when the dragged div touch the other, they move together.
I tried to use also jQuery Overlaps library to get if 2 divs are overlapped but I do something wrong.
Thanks in advance. Every library you can suggest are well accepted
EDIT:
A more complete example will be your example working:
Working JSFiddle:
https://jsfiddle.net/mcbo9bs3/
function rotateAnnotationCropper(offsetSelector, xCoordinate, yCoordinate, cropper){
//alert(offsetSelector.left);
var x = xCoordinate - offsetSelector.offset().left - offsetSelector.width()/2;
var y = -1*(yCoordinate - offsetSelector.offset().top - offsetSelector.height()/2);
var theta = Math.atan2(y,x)*(180/Math.PI);
var cssDegs = convertThetaToCssDegs(theta);
var rotate = 'rotate(' +cssDegs + 'deg)';
cropper.css({'-moz-transform': rotate, 'transform' : rotate, '-webkit-transform': rotate, '-ms-transform': rotate});
$('body').on('mouseup', function(event){ $('body').unbind('mousemove')});
}
function convertThetaToCssDegs(theta){
var cssDegs = 90 - theta;
return cssDegs;
}
$(document).ready(function(){
//$('.marker-1').draggable();
var items = $('#dynamic-container').find('.marker');
var i = 0;
var cssDegs = 15;
var rotate = 'rotate(' +cssDegs + 'deg)';
for (i; i<items.length; i++){
if(i == 0){
cssDegs = cssDegs*i;
}else{
cssDegs = cssDegs+20;
}
console.log("cssDegs: "+cssDegs);
rotate = 'rotate(' +cssDegs + 'deg)';
//Imposto i gradi a tutti i punti per differenziarli al document ready
$(items[i]).css({'-moz-transform': rotate, 'transform' : rotate, '-webkit-transform': rotate, '-ms-transform': rotate});
//items[i].css("background-color","blue");
}
console.log(items);
$('.marker').on('mousedown', function(){
$('body').on('mousemove', function(event){
//rotateAnnotationCropper($('#innerCircle').parent(), event.pageX,event.pageY, $('.marker'));
//rotateAnnotationCropper($('#innerCircle').parent(), event.pageX,event.pageY, $(event.target));
rotateAnnotationCropper($('#innerCircle').parent(), event.pageX,event.pageY, $(this).find('.marker-1'));
var markers = $(this).find('.marker');
});
});
$('body').on('mouseup', function(event){ $('body').unbind('mousemove')});
});
window.setInterval(function() {
$('#result').text(collision($('.marker-1'), $('.marker-2')));
}, 200);
function collision($div1, $div2) {
var x1 = $($div1).offset().left;
var y1 = $($div1).offset().top;
var h1 = $($div1).outerHeight(true);
var w1 = $($div1).outerWidth(true);
var b1 = y1 + h1;
var r1 = x1 + w1;
var x2 = $($div2).offset().left;
var y2 = $($div2).offset().top;
var h2 = $($div2).outerHeight(true);
var w2 = $($div2).outerWidth(true);
var b2 = y2 + h2;
var r2 = x2 + w2;
if (b1 < y2 || y1 > b2 || r1 < x2 || x1 > r2) return false;
return true;
}
To detect overlapping this code should work:
function collision($div1, $div2) {
var x1 = $($div1).offset().left;
var y1 = $($div1).offset().top;
var h1 = $($div1).outerHeight(true);
var w1 = $($div1).outerWidth(true);
var b1 = y1 + h1;
var r1 = x1 + w1;
var x2 = $($div2).offset().left;
var y2 = $($div2).offset().top;
var h2 = $($div2).outerHeight(true);
var w2 = $($div2).outerWidth(true);
var b2 = y2 + h2;
var r2 = x2 + w2;
if (b1 < y2 || y1 > b2 || r1 < x2 || x1 > r2) return false;
return true;
}
You can apply that to your code (replacing the overlap function).
Hope it helps!
I'm trying to create 'snow' on the background of a single div. The code is below but you can see it here: http://www.getwiththebrand.com/makeabrew_copy/
I want to put the effect on the div with the red border only (number 4).
Can anyone tell me what I'm missing?
<!-- language: lang-js -->
var width = getWidth();
var height = getHeight();
var flakeCount = 50;
var gravity = 0.7;
var windSpeed = 20;
var flakes = [];
function getWidth() {
var x = 0;
if (self.innerHeight) {
x = self.innerWidth;
}
else if (document.documentElement && document.documentElement.clientHeight) {
x = document.documentElement.clientWidth;
}
else if (document.body) {
x = document.body.clientWidth;
}
return x;
}
function getHeight() {
var y = 0;
if (self.innerHeight) {
y = self.innerHeight;
}
else if (document.documentElement && document.documentElement.clientHeight) {
y = document.documentElement.clientHeight;
}
else if (document.body) {
y = document.body.clientHeight;
}
return y;
}
function getRandom(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
var currentFlake = 0;
var snowglobe = document.getElementById("snowglobe");
while (currentFlake < flakeCount) {
var flake = document.createElement("div");
flake.className = 'flake';
flake.style.fontSize = getRandom(12, 24) + 'px';
flake.style.top = getRandom(0, height) + 'px';
flake.style.left = getRandom(0, width) + 'px';
flake.innerHTML = "•";
newFlake = snowglobe.appendChild(flake);
newFlake.speed = getRandom(1, 100);
flakes.push(newFlake);
currentFlake++;
}
function doAnimation() {
for (var i = 0; i < flakes.length; i++) {
newX = false;
newY = false;
// Calculate Y position
newY = parseFloat(flakes[i].style.top) + (flakes[i].speed / 100) * gravity;
if (newY > height) {
newY = 0 - parseInt(flakes[i].style.fontSize);
// If Y is at bottom, randomize X
newX = getRandom(0, width);
}
// Calculate X position if it hasn't been set randomly
if (!newX) newX = parseFloat(flakes[i].style.left) + Math.sin(newY / windSpeed);
if (newX < -20) newX = width + 20;
if (newX > width + 20) newX = -20;
// Set new position
flakes[i].style.top = newY + 'px';
flakes[i].style.left = newX + 'px';
}
}
setInterval(doAnimation, 10);
window.onresize = function(event) {
width = getWidth();
height = getHeight();
}
<!-- language: lang-css -->
#snowglobe .flake {
position: absolute;
width: 1px;
height: 1px;
color: rgba(255,255,255,0);
text-shadow: 0 0 3px rgba(255,255,255,1);
}
<!-- language: lang-html -->
<div class="ui-full-width">
<div class="container even" id="snowglobe">
<h3><span class="num">4</span>Add freshly boiled water to the pot</h3>
<p>Give it a stir and secure the lid. Wrap your pot in a tea-cosy if it's nippy outside!</p>
</div>
</div>
<!-- end snippet -->
<div class="ui-full-width">
<div class="container even" id="snowglobe">
<h3><span class="num">4</span>Add freshly boiled water to the pot</h3>
<p>Give it a stir and secure the lid. Wrap your pot in a tea-cosy if it's nippy outside!</p>
</div>
</div>
Your myjs.js has an extra character at the end of the file when it's loaded in my browser and it triggers a rightful
SCRIPT1014: Invalid character
myjs.js (116,2)
The script part:
window.onresize = function(event) {
width = getWidth();
height = getHeight();
}â // << here
Also, I don't know what browser you're using but try hitting F12, you'll get the console and you'll see javascript erros and other useful informations.
Edit: it's even worse, you have multiple characters at the end of your script:
window.onresize = function(event) {
width = getWidth();
height = getHeight();
}​ // ??
Did you mess around with some file encoding options?
thanks for looking. I commented out the code so that's what the extra characters were. I haven't done anything to the file encoding options.
I checked the console and there were some elements undefined. Looks like I missed a whole chunk:
var width = getWidth();
var height = getHeight();
var flakeCount = 50;
var gravity = 0.7;
var windSpeed = 20;
var flakes = [];
All good now!
I want to get the exact positions of the div using its class name. Here is the screenshot.. My script which is finding a div position is highlighted in yellow and the div i am looking for is at the bottom highlighted red. Since my script is placed above the div so i am finding the parent div of the document and then comparing the div class with the div class i am looking for and thats how i am getting the positions. The positions are not exact. For example if the Top and Left position of the div is 50,150 then i am getting like 55,155.
function getPosition(element) {
var xPosition = 0;
var yPosition = 0;
var left = 0;
var top = 0;
var i = 0;
while (element) {
xPosition = (element.offsetLeft);
yPosition = (element.offsetTop);
console.log("TOP Pos: "+yPosition+"Left Pos: "+xPosition);
if (i == 1) {
left = xPosition;
top = yPosition;
}
element = element.offsetParent;
i++;
}
return {
x: left,
y: top
};
}
And this is how i am using this method.
function ReadDivPos(selector) {
var _divPos = "";
var parentDoc = window;
while (parentDoc !== parentDoc.parent) {
parentDoc = parentDoc.parent;
}
parentDoc = parentDoc.document;
var parentDiv = parentDoc.getElementsByTagName('div');
var divs = [];
for (var i = 0; i < parentDiv.length; i++) {
if (parentDiv[i].className == "content") {
var pos = getPosition(parentDiv[i]);
var x = pos["x"];
var y = pos["y"];
console.log("Values+ Top: " + y + " Left: " + x);
var w = parentDiv[i].offsetWidth;
_divPos += x + "," + w + "," + y + "," + (x + w) + ","+window.screen.availWidth+"\\n";
}
}
console.log("Values+ x: " + _divPos);
return _divPos;
}
This is working fine but i am just wondering is there any other better way to make it done using jquery or any other method. Thanks in advance!.
See :
$(function() {
var x = $(".target").offset().left,
y = $(".target").offset().top;
$(".target").html("x: " + x + " y: " + y);
});
body
{
padding: 0;
}
.target
{
background-color: lightgreen;
width: 7em;
height: 7em;
line-height: 7em;
text-align: center;
left: 100px;
top: 20px;
font-family: Calibri;
position: absolute;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="target"></div>
I'm a new leaner for JavaScript. I wanna create an array to store multiple x and y values for one object (array[0]), then use this values to compare with canvas drawing object x and y coordinates.
For example I have the fix x and y values as below:
(x : y)
585 : 225
584 : 231
579 : 254
573 : 271
570 : 279
570 : 280
I will get the drawing object x and y coordinates and compare with the above values. if more then 3 group of x and y values wrong then show:wrong answer. it's possible to do that? Thank you! please help...
here is the coding:
<!DOCTYPE html>
<html><head>
<style>
#contain {
width: 500px;
height: 120px;
top : 15px;
margin: 0 auto;
position: relative;
}
</style>
<script>
var touchList = [];
var plates = [];
var currentPlates;
var currentIndex = 0;
var canvas;
var ctx;
var lastPt=null;
var letsdraw = false;
var offX = 440, offY = 25;
function init() {
var touchzone = document.getElementById("layer1");
touchzone.addEventListener("touchmove", draw, false);
touchzone.addEventListener("touchend", end, false);
ctx = touchzone.getContext("2d");
}
function draw(e) {
e.preventDefault();
var selectedCoordinate = new Object();
selectedCoordinate.x = e.touches[0].pageX;
selectedCoordinate.y = e.touches[0].pageY;
touchList.push(selectedCoordinate);
console.log("X: " + e.touches[0].pageX + " Y: " + e.touches[0].pageY);
if (lastPt != null) {
ctx.beginPath();
ctx.moveTo(lastPt.x, lastPt.y);
ctx.lineTo(e.touches[0].pageX - offX,
e.touches[0].pageY - offY);
ctx.stroke();
}
lastPt = {
x: e.touches[0].pageX - offX,
y: e.touches[0].pageY - offY
};
}
function end(e) {
for(var i=0; i<touchList.length; i++)
console.log(touchList[i].x + " : " + touchList[i].y);
var touchzone = document.getElementById("layer1");
e.preventDefault();
//Terminate touch path
lastPt = null;
}
function clear_canvas_width ()
{
var s = document.getElementById ("layer1");
var w = s.width;
s.width = 10;
s.width = w;
}
function initPlates() {
plates[0] = new Plates(1, 568, 262);
generateQuestion(isEasy);
for(var i=0; i<currentPlates.length; i++) {
console.log("Index: " + i + " value: " + currentPlates[i].index);
}
}
function Plates(index, correct, deficient) {
this.index = index;
this.correct = correct;
this.deficient = deficient;
}
Plates.prototype.checkAnswer = function(answer) {
console.log("Checking user answer: " + answer);
this.userAnswer = answer;
if(answer == this.correct)
this.result = "Correct";
else
this.result = "Wrong";
}
</script>
</head>
<body onload="init()">
<div id="contain">
<canvas id="layer1" width="450" height="440" style="position: absolute; left: 0; top: 0;z-index:0; border: 1px solid #ccc;"></canvas>
</div>
</body>
</html>
You can try to store object instead of multidimensional array.
var coords=new Array();
coords.push({x:584,y:225});
coords.push({x:588,y:222});
var xcoord =coords[0].x;
var ycoord =coords[0].y;