Develop Reference

I give two div the same style on click of a button and they don't behave the same

I have canvas where I can upload pdf file.On click of a button I can create div with image inside that is called divMark and I can drag that div on canvas.I made zoom functionality where on click of a button I increase width and height on all four sides for 25px and also I change style left and top of divMark. Original coordinates I store in array I have xList for top coordinates and yList for left coordinates and each value in xList I increase for 12 and yList I decrease for 5 then first value form each array I gave to first div second value to second div and so on.
This is code for creating divMark and for zoom functionality:
const myImg = document.getElementById("the-canvas");
const divBtn = document.querySelector(".btn-mark");
const zoomOutBtn = document.querySelector(".zoom-out-btn");
const zoomInBtn = document.querySelector(".zoom-in-btn");
let counter = 0;
let showCounter = 1;
divBtn.addEventListener("click", createContent);
zoomInBtn.addEventListener("click", zoomIn);
zoomOutBtn.addEventListener("click", zoomOut);
function createContent() {
var divMark = document.createElement("div");
divMark.classList = `markers mark`;
divMark.id = `${counter}`;
var img = document.createElement("img");
img.classList = "comment";
img.src = "indeksiraj-1.png";
img.alt = "myimage";
var pCounter = document.createElement("p");
pCounter.classList = "p-counter";
pCounter.innerHTML = showCounter;
divMark.appendChild(pCounter);
divMark.appendChild(img);
$(marksCanvas).append(divMark);
divMarks.push(divMark);
counter++;
showCounter++;
window.onload = addListeners();
function addListeners() {
divMark.addEventListener("mousedown", mouseDown, false);
window.addEventListener("mouseup", mouseUp, false);
}
function mouseUp() {
window.removeEventListener("mousemove", divMove, true);
}
function mouseDown(e) {
window.addEventListener("mousemove", divMove, true);
}
function divMove(e) {
var xCord = e.pageX;
var yCord = e.pageY;
divMark.style.top = yCord + "px";
divMark.style.left = xCord + "px";
divMark.onclick = function () {
divContent.setAttribute("style", "visibility:visible;");
console.log(parseInt(divMark.id));
let index = parseInt(divMark.id);
xList = removeXListItem(index, xList);
xList.splice(parseInt(divMark.id), 0, xCord);
yList.splice(parseInt(divMark.id), 0, yCord);
};
}
}
function xCordPlus(num) {
return num + 22;
}
function yCordPlus(num) {
return num + -8;
}
function xCordMinus(num) {
return num - 22;
}
function yCordMinus(num) {
return num + 8;
}
function removeXListItem(index, xList) {
xList.splice(index, 1);
return xList;
}
function zoomIn() {
var currWidth = myImg.clientWidth;
if (currWidth == 1000) return false;
else {
var currWidth = myImg.clientWidth;
myImg.style.width = currWidth + 100 + "px";
}
xList = xList.map(xCordPlus);
console.log("xList is: " + xList);
yList = yList.map(yCordPlus);
$(".markers").each(function (index) {
$(this).css({ top: yList[index] + "px", left: xList[index] + "px" });
});
}
function zoomOut() {
var currWidth = myImg.clientWidth;
var currHeight = myImg.clientHeight;
if (currWidth == 800) return false;
else {
var currWidth = myImg.clientWidth;
myImg.style.width = currWidth - 100 + "px";
}
xList = xList.map(xCordMinus);
yList = yList.map(yCordMinus);
$(".markers").each(function (index) {
$(this).css({ top: yList[index] + "px", left: xList[index] + "px" });
});
}
My problem is that when I put two divMarks one on the left side of canvas other one on the right side divMark on the right side works great it moves when I click zoomInBtn how is suppose to but divMark on the right side it does not work well it moves to much on the right side it not works like divMark on the right side.
Here is all code: https://jsfiddle.net/SutonJ/thernqmv/13/

You are making the zoom-out-btn class, when hovered, not disabled and active, go down the screen by the length of 12.5% of the size of the html element's font size on line 200 of the CSS in that jsfiddle you posted.
.zoom-out-btn:not(:disabled):hover:active {
transform: scale(1.05) translateY(0.125rem);
}
You are never doing the same for zoom-in-btn. Additionally, the css is quite different for the zoom-in-btn, so you need to add a transition property to that class if you want the on-hover effect to look smooth.

Top attribute won't update. Function only works when I set if function value = to initial top value in javascript

I was working on collision detection and thought I would start out simple by testing when the object reaches a certain x-position. It works when I set it to 100, the initial top value for 'character, which leads me to believe the problem is with top updating; however, I don't see why the circles would be moving if that were the case.If you could tell me how to keep 'top' updated or better yet, help me with collision detection that would be great!
(ps. I know it's not good to put css, javascript, and html in one page. I have this as part of a website but moved it to one file so I could test it separately without looking through the code of the entire website and I will add it in the appropriate files once I get this figured out.)
<html>
<head>
<style>
#character {
position: absolute;
width: 42px;
height: 42px;
background: black;
border-radius: 50%;
}
#character2 {
position: absolute;
width: 42px;
height: 42px;
background: pink;
border-radius: 50%;
} </style>
</head>
<body>
<div id = 'character'></div>
<div id = 'character2'></div>
<script>
var keys = {};
keys.UP = 38;
keys.LEFT = 37;
keys.RIGHT = 39;
keys.DOWN = 40;
keys.W = 87;
keys.A = 65;
keys.D = 68;
keys.S = 83;
/// store reference to character's position and element
var character = {
x: 1000,
y: 100,
speedMultiplier: 1,
element: document.getElementById("character")
};
var character2 = {
x: 100,
y: 100,
speedMultiplier: 3,
element: document.getElementById("character2")
};
/// key detection (better to use addEventListener, but this will do)
document.body.onkeyup =
document.body.onkeydown = function(e){
/// prevent default browser handling of keypresses
if (e.preventDefault) {
e.preventDefault();
}
else {
e.returnValue = false;
}
var kc = e.keyCode || e.which;
keys[kc] = e.type == 'keydown';
};
/// character movement update
var moveCharacter = function(dx, dy){
character.x += (dx||0) * character.speedMultiplier;
character.y += (dy||0) * character.speedMultiplier;
character.element.style.left = character.x + 'px';
character.element.style.top = character.y + 'px';
};
var moveCharacter2 = function(dx, dy){
character2.x += (dx||0) * character2.speedMultiplier;
character2.y += (dy||0) * character2.speedMultiplier;
character2.element.style.left = character2.x + 'px';
character2.element.style.top = character2.y + 'px';
};
/// character control
var detectCharacterMovement = function(){
if ( keys[keys.LEFT] ) {
moveCharacter(-1, 0);
}
if ( keys[keys.RIGHT] ) {
moveCharacter(1, 0);
}
if ( keys[keys.UP] ) {
moveCharacter(0, -1);
}
if ( keys[keys.DOWN] ) {
moveCharacter(0, 1);
}
if ( keys[keys.A] ) {
moveCharacter2(-1, 0);
}
if ( keys[keys.D] ) {
moveCharacter2(1, 0);
}
if ( keys[keys.W] ) {
moveCharacter2(0, -1);
}
if ( keys[keys.S] ) {
moveCharacter2(0, 1);
}
};
/// update current position on screen
moveCharacter();
moveCharacter2();
/// game loop
setInterval(function(){
detectCharacterMovement();
}, 1000/24);
function getPosition() {
var elem = document.getElementById("character");
var top = getComputedStyle(elem).getPropertyValue("top");
if (top == '200px') {
alert ("hi");
}
getPosition()
}
getPosition()
// var pos1 = document.getElementById('character').style.top
</script>
</body>
</html>

I figured it out! I just added Jquery's .position() to get the coordinates! For the collision detection I added this:
function collision1() {
$(document).ready(function(){
var x = $("#character").position();
var y = $("#character2").position();
var zid = '#' + id
var z = $(zid).position();
var topX = parseInt(x.top);
var topZ = parseInt(z.top);
var leftX = parseInt(x.left);
var leftZ = parseInt(z.left);
var topY = parseInt(y.top);
var leftY = parseInt(y.left);
if (topX > topZ && topX < (topZ + 50) && leftX > leftZ && leftX < (leftZ + 100)) {
alert('Player 1 Won! Click restart to play again.')
document.getElementById("button2").style.display = "block";
document.getElementById("def").style.display = "none";
document.getElementById("def2").style.display = "none";
document.getElementById("def3").style.display = "none";
document.getElementById("def4").style.display = "none";
document.getElementById("term").style.display = "none";
}
else {
collision1()}
});}
I know it is probably not the most effective way to program this but it works!

jQuery: change class after conditional is met

I created this site where you have multiple sliders moving vertically using this example on stackoverflow > here < along with this fiddle.
The site when loaded has an overflow: hidden on the body and position fixed on my main content div(div class="content-fs row"). The idea is that when you first arrive on the page, you scroll through each slide and once you hit the last one, the position changes on the main content div(div class="content-fs row") from fixed to static and the overflow: hidden is removed from the body. I'm having trouble writing the conditional statement that says "if its the last slider, change the position." The jquery below is the code i'm using for the site along with the conditional statement that doesn't work.
Any pointers/advice would be greatly appreciated!
jquery:
function scrollLax(){
/*
initialize
*/
var scrollDown = false;
var scrollUp = false;
var scroll = 0;
var $view = $('#portfolio');
var t = 0;
var h = $view.height() - 250;
$view.find('.portfolio-sliders').each(function() {
var $moving = $(this);
// position the next moving correctly
if($moving.hasClass('from-bottom')) {
$moving.css('top', h); // subtract t so that a portion of the other slider is showing
}
// make sure moving is visible
$moving.css('z-index', 10);
});
var $moving = $view.find('.portfolio-sliders:first-child');
$moving.css('z-index', 10);
/*
event handlers
*/
var mousew = function(e) {
var d = 0;
if(!e) e = event;
if (e.wheelDelta) {
d = -e.wheelDelta/3;
} else if (e.detail) {
d = e.detail/120;
}
parallaxScroll(d);
}
if (window.addEventListener) {
window.addEventListener('DOMMouseScroll', mousew, false);
}
window.onmousewheel = document.onmousewheel = mousew;
/*
parallax loop display loop
*/
window.setInterval(function() {
if(scrollDown)
parallaxScroll(4);
else if(scrollUp)
parallaxScroll(-4);
}, 50);
function parallaxScroll(scroll) {
// current moving object
var ml = $moving.position().left;
var mt = $moving.position().top;
var mw = $moving.width();
var mh = $moving.height();
// calc velocity
var fromBottom = false;
var vLeft = 0;
var vTop = 0;
if($moving.hasClass('from-bottom')) {
vTop = -scroll;
fromBottom = true;
}
// calc new position
var newLeft = ml + vLeft;
var newTop = mt + vTop;
// check bounds
var finished = false;
if(fromBottom && (newTop < t || newTop > h)) {
finished = true;
newTop = (scroll > 0 ? t : t + h);
}
// set new position
$moving.css('left', newLeft);
$moving.css('top', newTop);
// if finished change moving object
if(finished) {
// get the next moving
if(scroll > 0) {
$moving = $moving.next('.portfolio-sliders');
if($moving.length == 0)
$moving = $view.find('.portfolio-sliders:last');
//this is where I am trying to add the if conditional statement.
if ('.portfolio-sliders:last')
$('.content-fs.row').css({'position': 'static'});
if('.portfolio-sliders:last' && (mt == 0))
$('html, body').removeClass('overflow');
} else {
$moving = $moving.prev('.portfolio-sliders');
if($moving.length == 0)
$moving = $view.find('.portfolio-sliders:first-child');
//reverse the logic and if last slide change position
if('.portfolio-sliders:first-child')
$('.content-fs.row').css({'position': 'fixed'});
}
}
// for debug
//$('#direction').text(scroll + "/" + t + " " + ml + "/" + mt + " " + finished + " " + $moving.text());
}
}

Your code as it is simply asks whether .portfolio-sliders:last exists. Seems you should be doing:
if ($moving == $('.portfolio-sliders:last') )
or something along those lines, instead checking whether the active slide is the last.

JavaScript: How do I stack rectangle elements tetris style, without using plugins?

I'm making a scheduling calendar. The events are horizontal blocks (Google Cal has vertical ones). And because I have loads of events in one date I want the events to stack onto eachother without wasting any space, like this:
I did find plugins:
http://masonry.desandro.com/
http://isotope.metafizzy.co/
http://packery.metafizzy.co/
But I'm not keen on using a 30kb plugin just to do this simple thing.
To clarify: because this is a timeline, the div-events cannot move left/right, but must fit itself vertically amongst other div-events.

My own solution is a 2.6kb (commented) jQuery script, that uses absolute positioning for events and a div as a container for each row.
This script generates randomly size bars. Each new bar checks for space in each row from top-down. I'm using percentages, because that way calculating bar position against time will be easy (100% / 24h).
http://jsfiddle.net/cj23H/5/
Though works and is efficient enough, it feels bulky. You're welcome to improve.
jQuery code from my jsfiddle:
function rand() {
return Math.floor(Math.random() * 101);
}
function get_target_row(width, left) {
var i = 0;
var target_found = false;
// Loop through all the rows to see if there's space anywhere
while (target_found === false) {
// Define current row selector
var target_i = '.personnel#row' + i;
// Add row if none
if ($(target_i).length === 0) {
$('body').append('<div class="personnel" id="row' + i + '"></div>');
}
// See if there's space
if ($(target_i).children().length === 0) {
target_found = $(target_i);
} else {
var spaceFree = false;
// Check collision for each child
$(target_i).children().each(function () {
// Get left and right coordinates
var thisWidthPx = parseFloat($(this).css('width'), 10);
var thisWidthParentPx = parseFloat($(this).parent().css('width'), 10);
var thisWidth = (thisWidthPx / thisWidthParentPx * 100);
var thisLeftPx = parseFloat($(this).css('left'), 10);
var thisLeftParentPx = parseFloat($(this).parent().css('left'), 10);
var thisLeft = (thisLeftPx / thisWidthParentPx * 100);
var thisRight = thisLeft + thisWidth;
var right = left + width;
// Sexy way for checking collision
if ((right > thisLeft && right < thisRight) || (left < thisRight && left > thisLeft) || (thisLeft > left && thisLeft < right) || (thisRight < right && thisRight > left)) {
spaceFree = false;
return false;
} else {
spaceFree = true;
}
});
// If no children have collided break the loop
if (spaceFree === true) {
target_found = $(target_i);
}
}
i++;
}
// If after all the while loops target is still not found...
if (target_found === false) {
return false;
}
// Else, if target is found, return it.
return target_found;
}
// Generate random bars
for (var i = 0; i < 10; i++) {
var width = rand()/2;
var left = rand()/2;
var right = left + width;
var target = get_target_row(width, left);
target.append('<div class="block" style="width:' + width + '%;position:absolute;left:' + left + '%;background-color:rgba(' + rand() + ',' + rand() + ',' + rand() + ',0.4)" id="bar'+i+'">' + 'b' + i + '</div>');
}
CSS:
.block {
position: absolute;
background-color: rgba(200, 100, 100, 0.4);
height: 32px;
}
.personnel {
position: relative;
float: left;
width: 100%;
height: 33px;
}

jQuery rearrange DOM elements

I'm a little confused why this is not working how it's supposed to.
I have a list of <div>s that wrap around based on the size of the page. But clicking the div it .animate() the width of the clicked div and animates the divs after it closer together and stacks them.
This all works except the last stacked div, despite having plenty of room still gets knocked down to the next row.
please see my code on jsfiddle:
http://jsfiddle.net/ZHYRq/2/
$.each($('.employee-box'), function(i, el) {
$(el).addClass("top-" + (Math.round($(el).offset().top)));
return $(el).css('position', 'relative').attr('data-left', Math.round($(el).offset().left));
});
$('.employee-image').hover(function(e) {
var $employee;
$employee = $(e.target).parents('.employee-box');
if (e.type === 'mouseenter') {
return $($employee.find('a.bio')).addClass('highlight');
} else {
return $($employee.find('a.bio')).removeClass('highlight');
}
});
$('.employee-image, a.bio').click(function(e) {
var $employee, is_expanded, speed;
speed = 150;
$employee = $(e.target).parents('.employee-box');
is_expanded = $employee.hasClass('bio-expanded');
if ($('.bio-expanded').length > 0) {
$.when(collapse_previous_bio(speed)).then(function() {
if (!is_expanded) {
return expand_bio_box($employee, speed);
}
});
} else {
expand_bio_box($employee, speed);
}
return false;
});
var collapse_previous_bio = function(speed) {
var klass;
klass = "." + $('.bio-expanded').attr('class').match(/top-\d{1,5}/)[0];
$('.bio-expanded .bio-block').fadeOut(speed, function() {
$('.bio-expanded').animate({
width: "185px"
}, speed);
$(klass).animate({
left: '0px'
}, speed);
$('.bio-expanded').removeClass('bio-expanded');
});
};
var expand_bio_box = function($employee, speed) {
var curr_left, klass;
klass = "." + $employee.attr('class').match(/top-\d{1,5}/)[0];
curr_left = parseInt($employee.data('left'));
// comment out the $.when block and un-comment out the collapse_others() to see the other elements collapse as they should
$.when(collapse_others(klass, curr_left)).then(function() {
$employee.animate({
width: "392px"
}, speed, function() {
$employee.find('.bio-block').fadeIn(speed);
$employee.addClass('bio-expanded');
});
});
// collapse_others(klass, curr_left)
};
var collapse_others = function(klass, curr_left) {
var left_pos;
left_pos = 0;
$.each($(klass), function(i, el) {
var el_left;
el_left = parseInt($(el).data('left'));
$(el).css({
zIndex: 100 - i
});
if (el_left > curr_left) {
$(el).animate({
left: "-" + left_pos + "px"
}, 100);
left_pos += 100;
}
});
};
I'm not sure what is wrong here. Any thoughts?