We Keep Coding

Animate div from right to left and then from left to right again

I try to animate a div from its original position to left of the screen, if a button was clicked. If another button is clicked then i want it to animate back to it's origin position. I was able to figure out on how to animate it from right to left, but i cant animate it back to its original position.
var left = $('#coolDiv').offset().left;
$("#b1").click(
function() {
$("#coolDiv").css({
left: left
}).animate({
"left": "0px"
}, "slow");
}
);
$("#b2").click(
function() {
$("#coolDiv").css({
right: right
}).animate({
"right": "0px"
}, "slow");
}
);
#coolDiv {
width: 50px;
height: 50px;
position: absolute;
right: 0;
background: yellow;
}
#b1 {
margin-top: 100px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="coolDiv">cool</div>
<button id="b1">left</button>
<button id="b2">right</button>
http://jsfiddle.net/XqqtN/5385/

Set the left CSS to the window width minus the width of the box.
$("#b1").click(function() {
// Get the current left of the div
var left = $('#coolDiv').offset().left;
$("#coolDiv").css({
left: left
}).animate({
left: 0
}, "slow");
});
$("#b2").click(function() {
var left = $(window).width() - $('#coolDiv').width();
$("#coolDiv").css({
left: 0
}).animate({
left: left
}, "slow");
});
#coolDiv {
width: 50px;
height: 50px;
position: absolute;
right: 0;
background: yellow;
}
#b1 {
margin-top: 100px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="coolDiv">cool</div>
<button id="b1">Left</button>
<button id="b2">Right</button>
Optimized Code:
// Common function to animate Div on both button clicks
function animateDiv(left, right) {
$('#coolDiv').css({
left: left
}).stop(true, true).animate({
left: right
}, 'slow');
}
$('#b1').click(function() {
animateDiv($('#coolDiv').offset().left, 0);
});
$('#b2').click(function() {
animateDiv(0, $(window).width() - $('#coolDiv').width());
});
#coolDiv {
width: 50px;
height: 50px;
position: absolute;
right: 0;
background: yellow;
}
#b1 {
margin-top: 100px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="coolDiv">cool</div>
<button id="b1">Left</button>
<button id="b2">Right</button>

Can you try something simple like this?
$(function () {
$(".animateable").animate({
left: $(window).innerWidth() - 50
}, 1000, function () {
$(".animateable").animate({
left: 0
}, 1000);
});
});
* {font-family: Segoe UI; line-height: 1;}
.animateable {position: absolute; width: 50px; text-align: center; background-color: #ccf; line-height: 2em;}
<script src="https://code.jquery.com/jquery-1.9.1.js"></script>
<div class="animateable">
Hi
</div>
You can use setInterval to make it work a lot of times.
$(function () {
setInterval(function () {
$(".animateable").animate({
left: $(window).innerWidth() - 50
}, 1000, function () {
$(".animateable").animate({
left: 0
}, 1000);
});
}, 2000);
});
* {font-family: Segoe UI; line-height: 1;}
.animateable {position: absolute; width: 50px; text-align: center; background-color: #ccf; line-height: 2em;}
<script src="https://code.jquery.com/jquery-1.9.1.js"></script>
<div class="animateable">
Hi
</div>

This is your updated code. Make changes like following:
$("#b1").click(
function() {
$("#coolDiv").animate({
"left": "0px"
},
"slow"
);
$("#coolDiv").css('right', '');
}
);
$("#b2").click(
function() {
$("#coolDiv").animate({
"right": "0px"
},
"slow"
);
$("#coolDiv").css('left', '');
}
);
#coolDiv {
width: 50px;
height: 50px;
position: absolute;
right: 0;
background: yellow;
}
#b1 {
margin-top: 200px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<div id="coolDiv">cool</div>
<button id="b1">B1</button>
<button id="b2">B2</button>
Hope it helps.

A CSS class is added to an element by JS at runtime, but its properties are not applied. Why?

I have been monitoring what CSS classes properties are applied to .header when the window is scrolled down enough that .view is no longer visible. The class scroll-header IS added to .header, but the associated CSS properties ARE NOT applied. They question is why and how do I fix this?
$(document).ready(function() {
console.log("script.js is detected"); //check
$(window).scroll(function() {
console.log("window onscroll being called."); //check
if ($("div.view").visible(true)) {
console.log("YES if ( $(\"div.view\").visible(true) )"); //check
$(".header").removeClass(".scroll-header");
} else {
console.log("NO if ( $(\"div.view\").visible(true) )"); //check
$(".header").addClass(".scroll-header");
}
});
});
.view {
height: 500px;
width: 100%;
background-color: crimson;
}
.second {
height: 2500px;
width: 100%;
background-color: purple;
}
.header {
position: absolute;
width: 100%;
height: 100px;
background-color: cyan;
top: 0px;
left: 0px;
}
.scroll-header {
background-color: yellow;
position: fixed;
width: 100%;
height: 70px;
background-color: yellow;
}
* {
border: 0px;
padding: 0px;
margin: 0px;
box-sizing: border-box;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://cdn.jsdelivr.net/jquery.visible/1.1.0/jquery.visible.min.js"></script>
<div class="view">.</div>
<div class="header">.</div>
<div class="second">.</div>
<div class="scroll-header" style="bottom:0px;">.</div>

as mentioned in comment, .visible is not a function of jquery. Although you can use below code to detect your dom element is visible or not:
if ($("#yourElem").is(":visible") == true) {
//do something
}
else {
//do something else
}
As you are using jquery.visible plugin. Your code is wrong in javascript. Correct code:
$(document).ready(function() {
console.log("script.js is detected"); //check
$(window).scroll(function() {
console.log("window onscroll being called."); //check
if ($("div.view").visible(true)) {
console.log("YES if ( $(\"div.view\").visible(true) )"); //check
$(".header").removeClass("scroll-header");
} else {
console.log("NO if ( $(\"div.view\").visible(true) )"); //check
$(".header").addClass("scroll-header");
}
});
});
You were adding .scroll-header instead of scroll-header

div not retaining CSS attribute on click()

I have a function that creates a grid of divs that are generated and sent to a container div when the document loads (or when the user resets it). When one hovers over the divs, they highlight (change color). When the user clicks the highlighted div, it changes to black. For some reason, the div that was black reverts back to the original color when I hover over a different div. I'm puzzled as to why that is. Any help or guidance would be greatly appreciated. Here's my jsfiddle example: https://jsfiddle.net/psyonix/1g9p59bx/79/
var d = ("<div class='square'></div>");
function createGrid(numSquares) {
var area = $('#g_area');
var squareSize = Math.floor(area.innerWidth() / numSquares);
for (var i = 0, len = (numSquares * numSquares); i < len; i++) {
area.append(d);
}
$('.square')
.height(squareSize)
.width(squareSize)
.hover(
function () {
$(this).css({
'background-color': '#FFFFFF'
});
}, function () {
$(this).css({
'background-color': '#C8C8C8'
});
})
.click(
function () {
$(this).css({
'background-color': '#000000'
});
});
}
function resetGrid() {
$(".square").remove();
}
$(document).ready(function () {
createGrid(8);
$("#button").click(function () {
var numSquares = prompt("Please enter the size");
resetGrid(numSquares);
createGrid(numSquares);
});
});

Once you click on a DIV, you should maintain a flag that tells you hover function to stop changing colors
$('.square')
.height(squareSize)
.width(squareSize)
.hover(
function () {
if ($(this).data("clicked")) return; //ADDED LINE
$(this).css({
'background-color': '#FFFFFF'
});
}, function () {
if ($(this).data("clicked")) return; //ADDED LINE
$(this).css({
'background-color': '#C8C8C8'
});
})
.click(
function () {
$(this).data("clicked", true); //ADDED LINE
$(this).css({
'background-color': '#000000'
});
});

it changed because of hover function.
https://jsfiddle.net/1g9p59bx/82/
$('.square')
.height(squareSize)
.width(squareSize)
.hover(
function () {
if($(this).hasClass('active'))return;
$(this).css({
'background-color': '#FFFFFF'
});
}, function () {
if($(this).hasClass('active'))return;
$(this).css({
'background-color': '#C8C8C8'
});
})
.click(
function () {
$(this).addClass('active');
$(this).css({
'background-color': '#000000'
});
});

For some reason, the div that was black reverts back to the original color when I hover over a different div
Not quite. It reverts to the original colour when you leave the current div, because that's what you tell it in the second argument to $('.square').hover. You would need to remember that the square was clicked, and build extra logic into the "unhover" function.
Fortunately, there is an easier way: use CSS. Note the very bottom of the CSS definitions.
var d = ("<div class='square'></div>");
function createGrid(numSquares) {
var area = $('#g_area');
var squareSize = Math.floor(area.innerWidth() / numSquares);
for (var i = 0, len = (numSquares * numSquares); i < len; i++) {
area.append(d);
}
$('.square')
.height(squareSize)
.width(squareSize)
.click(function () {
$(this).addClass('clicked');
});
}
function resetGrid() {
$(".square").remove();
}
$(document).ready(function () {
createGrid(8);
$("#button").click(function () {
var numSquares = prompt("Please enter the size");
resetGrid(numSquares);
createGrid(numSquares);
});
});
.container {
background-color: #252525;
width: 600px;
height: 700px;
margin: 0 auto;
border-radius: 5px;
}
.inner {
background-color: #C8C8C8;
position: absolute;
width: 580px;
height: 600px;
margin-right: 10px;
margin-left: 10px;
margin-top: 10px;
border-radius: 5px;
}
.knob {
background-color: #575759;
width: 60px;
height: 60px;
border-radius: 60px;
}
#left_b {
position: absolute;
margin-left: 30px;
margin-top: 625px;
margin-bottom: 10px;
}
#button {
position: absolute;
margin-left: 265px;
margin-top: 640px;
margin-bottom: 10px;
}
#right_b {
position: absolute;
margin-left: 510px;
margin-top: 625px;
margin-bottom: 10px;
}
#g_area {
background-color: #C8C8C8;
position: relative;
width: 580px;
height: 600px;
margin-right: auto;
margin-left: auto;
margin-top: auto;
border-radius: 5px;
overflow: hidden;
}
.square {
display: inline-block;
position: relative;
margin: 0 auto;
}
.highlight {
background-color: #FFFFFF;
outline: #C8C8C8;
outline: 1px;
outline: solid;
margin: 0 auto;
}
.square {
background-color: #C8C8C8;
}
.square:hover {
background-color: #FFFFFF;
}
.square.clicked {
background-color: #000000;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
<div class="container">
<div class="outer">
<div class="inner">
<div id="g_area"></div>
</div>
<div class="knob" id="left_b"></div>
<div id="button">
<button>RESET</button>
</div>
<div class="knob" id="right_b"></div>
</div>
</div>
</body>

How to jquery if scroll echo div?

I have this code:
#main {
max-width: 500px;
height: 900px;
margin: auto;
background: green
}
.menu1 {
height: 30px;
background: red
}
.menu2 {
display: none;
}
<div id="main">
<div class="menu1">COntent 1</div>
<div class="menu2">Content 2</div>
</div>
How to: When I'm scroll down div .menu2 display sticky in top as css
.menu2 {
height: 30px; background: blue; position: fixed
}
My code: http://jsfiddle.net/rh1aLnxs/
Thanks

this can be accomplished with css's position:fixed, as long as you don't need additional behavior regarding the parent div (position:fixed is ignorant to the parent in css)
here's an example:
.menu1 {position:fixed; height: 30px; background: red; max-width: 500px; width:100%}
http://jsfiddle.net/rh1aLnxs/
If you need for example, for menu1 to go away when the user scrolls below main, then you need to use jquery's scroll event and handle the positioning manually (http://api.jquery.com/scroll/)

try this:
var headerTop = $('.menu1').offset().top;
// var headerBottom = headerTop + 120; // Sub-menu should appear after this distance from top.
$(window).scroll(function () {
var scrollTop = $(window).scrollTop(); // Current vertical scroll position from the top
if (scrollTop > headerTop) { // Check to see if we have scrolled more than headerBottom
if (($(".menu2").is(":visible") === false)) {
$('.menu1').hide();
$('.menu2').fadeIn('slow');
}
} else {
if ($(".menu2").is(":visible")) {
$('.menu2').hide();
$('.menu1').fadeIn('slow');
}
}
});
#main {
max-width: 500px;
height: 900px;
margin: auto;
background: green
}
.menu1 {
height: 30px;
background-color: red
}
.menu2 {
background-color: blue;
max-width: 500px;
width: 100%;
top: 0;
display: none;
/*display: none*/
position: fixed;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="main">
<div class="menu1">Content1</div>
<div class="menu2">Content2</div>
</div>

Here are some improvements on your fiddle along with a simplified version of the script to add/remove a fixed class on scroll.
http://jsfiddle.net/rh1aLnxs/2/
jQuery(window).bind("scroll", function() {
if (jQuery(this).scrollTop() > 100) {
jQuery(".menu1").removeClass("no-fixed").addClass("fixed");
} else {
jQuery(".menu1").removeClass("fixed").addClass("no-fixed");
}
});
#main {max-width: 500px; height: 900px; margin: auto; background: green}
.menu1 {height: 30px; background: red}
.menu2 {display: none}
#main {
width:100%;
position:relative;
}
.no-fixed {
position: relative;
}
.fixed {
position: fixed;
width:100%;
max-width: 500px;
}
<div id="main">
<div class="menu1"></div>
<div class="menu2"></div>
</div>

Detect Hover for two intersecting Circular elements

i did an example on jsFiddle ( http://jsfiddle.net/aRWhm/ ) , the idea is to know when i'm over lets say the intersection between the red and the blue circle.
but the problem is that every time i reach the intersection, the class "is-over" of the red circle is removed.
Html:
<div>
<span id="Div1"></span>
<span id="Div2"></span>
<span id="Div3"></span>
<span id="Div4"></span>
</div>
CSS:
div {
display: block;
margin: 0 auto;
overflow: hidden;
width: 950px;
}
span {
display: block;
position: absolute;
opacity: 0.5;
border-radius: 999px;
z-index: 1;
}
#Div1 {
background-color: #FF0000;
height: 200px;
left: 50px;
top: 80px;
width: 200px;
}
#Div2 {
background-color: #0000FF;
height: 150px;
left: 40px;
top: 230px;
width: 150px;
}
#Div3 {
background-color: #008000;
height: 250px;
left: 100px;
top: 190px;
width: 250px;
}
#Div4 {
background-color: #FFFF00;
height: 100px;
left: 200px;
top: 130px;
width: 100px;
}
JavaScript:
$(document).ready(function () {
$("#Div1").hover(
function () {
$(this).addClass("is-over");
},
function () {
$(this).removeClass("is-over");
}
);
$("#Div2").hover(
function () {
$(this).addClass("is-over");
},
function () {
$(this).removeClass("is-over");
}
);
$("#Div3").hover(
function () {
$(this).addClass("is-over");
},
function () {
$(this).removeClass("is-over");
}
);
$("#Div4").hover(
function () {
$(this).addClass("is-over");
},
function () {
$(this).removeClass("is-over");
}
);
});

Here you go.
First, the Code:
(function($){
$.mlp = {x:0,y:0}; // Mouse Last Position
function documentHandler(){
var $current = this === document ? $(this) : $(this).contents();
$current.mousemove(function(e){jQuery.mlp = {x:e.pageX,y:e.pageY}});
$current.find("iframe").load(documentHandler);
}
$(documentHandler);
$.fn.ismouseover = function(overThis) {
var result = false;
this.eq(0).each(function() {
var $current = $(this).is("iframe") ? $(this).contents().find("body") : $(this);
var offset = $current.offset();
result = offset.left<=$.mlp.x && offset.left + $current.outerWidth() > $.mlp.x &&
offset.top<=$.mlp.y && offset.top + $current.outerHeight() > $.mlp.y;
});
return result;
};
})(jQuery);
$(document).ready(function () {
$("#myDiv").mousemove(
function() {
$("#myDiv").children("span").each(function(){
if($(this).ismouseover())
$(this).addClass("is-over");
else
$(this).removeClass("is-over");
});
});
});
Now an explanation:
I stole the .ismouseover() code shamelessly from this answer by Ivan Castellanos and repurposed it to your needs. Form there I used a .mousemove() event to fire every time you're in the parent container, which you can see in this fiddle needed to be given height and width parameters to ensure that it had a bounding box.
Lastly I simply check to see which circles you're over, and add the is-over class to them. The Fiddle is based off Anton's work, although it provides intersection support instead of moving one to the top.
Hope this helps.