I was trying to create a auto slide for the slider using setInterval. It works like a charm when there's only one slider.
When there are 2 slider, the first slider wont work, and the second slider will slide faster, because there will be 2 setInterval and both are sliding the second slider. Anyway to make sure each setInterval slide their own slider?
var autoSlideTimer = 5;
var autoslide = setInterval(function () {
if (autoSlideTimer == 0) {
var slideMargin = offsetMarginLeft - width;
if (-slideMargin == (width * totalImages)) {
offsetMarginLeft = width;
displayImage = 0;
}
slider.style.marginLeft = (offsetMarginLeft - width) + 'px';
displayImage += 1;
pagination = element.getElementsByTagName('ul')[0];
pagination.innerHTML = paginate;
pagination.getElementsByTagName('li')[displayImage - 1].setAttribute("class", "displayed");
slider = element.getElementsByTagName('div')[0];
offsetMarginLeft = parseInt(slider.style.marginLeft.replace('px', ''));
autoSlideTimer = 5;
} else {
autoSlideTimer--;
}
}, 1000);
thanks
I work it out with another way, although is working but doesnt seems to be the perfect way
var event = new Event('build');
// Listen for the event.
element.addEventListener('build', function (e) {
function timeoutLoop()
{
setTimeout(function(){
if(autoSlideTimer == 0)
{
var slideMargin = offsetMarginLeft - width;
if(-slideMargin == (width * totalImages))
{
offsetMarginLeft = width;
displayImage = 0;
}
slider.style.marginLeft = (offsetMarginLeft - width) + 'px';
displayImage += 1;
pagination = element.getElementsByTagName('ul')[0];
pagination.innerHTML = paginate;
pagination.getElementsByTagName('li')[displayImage - 1].setAttribute("class", "displayed");
offsetMarginLeft = parseInt(slider.style.marginLeft.replace('px', ''));
autoSlideTimer = 5;
}else
{
autoSlideTimer--;
}
timeoutLoop();
},1000);
}
timeoutLoop();
}, false);
// Dispatch the event.
element.dispatchEvent(event);
At first, I used setInterval inside, yet the slider will be overwritten. But setTimeout is ok.
Related
var move = function() {
Xpos = Math.round(Math.random() * 95);
food[num].css('left', Xpos + '%');
interval = setInterval(function() {
console.log(i);
var posTop = food[num].offset().top / $(window).height() * 100;
while(posTop < 80) {
if(posTop === 80) {
num++;
break;
}
posTop += 1;
food[num].css('top', posTop + '%');
break;
}
}, speed);
}
//Color the circle
circleColor();
move();
}
OK so this is my code. It creates a circle(a <div> element) on top of the screen and gives it a random x coordinate. Than it puts it in food[] array. The entire code starts by clicking the button, but every time I press the button again the circle that was last moving stops, function creates a new one and the new one moves. Is there a way I can make all elements in the array move without depending on each other?
http://jsfiddle.net/yqwjqx31/
I understand why this happens but I have no idea how to fix it.
First you're using a global variable num in setInterval function handler, so its value get modified while using it in new cercle create, secondly you're clearing interval of the last cercle you created before creating a new cercle. It means you're sharing the same interval between all cercles. Use instead an array of intervals just like var food =[] and use a temporary variable to prevent the index value modification inside your setInterval handler. Here's a working fiddle
//Interval
var interval =[];
var tempNum = num;
interval[num] = setInterval(function() {
var posTop = food[tempNum].offset().top / $(window).height() * 100;
while(posTop < 80) {
if(posTop === 80) {
break;
}
posTop += 1;
food[tempNum].css('top', posTop + '%');
break;
}
}, speed);
Increment your num variable
//Color the circle
circleColor();
move();
num++;
Your move function is only responsible for moving the last generated div via createCircle. If you want to move them all till collision, you need to loop through them all and move them accordingly. Or, you can animate them via CSS.
Here is the working version :
http://jsfiddle.net/yqwjqx31/3/
Notice how the setInterval callback loops through all the div and pushes them down until their height is 80.
var move = function () {
interval = setInterval(function () {
for (var i = 0; i < food.length; ++i) {
var posTop = food[i].offset().top / $(window).height() * 100;
if (posTop < 80) posTop += 1;
food[i].css('top', posTop + '%');
}
}, speed);
}
i am trying to get a div to slide down about 200px down a page using javascript when the user clicks another div which acts as a close button.
can someone please show me how i would do this?
<script>
$('.chat_close').click(function(e){
$('.chat_box').slideDown();
});
</script>
Someone already asked the same question a while ago. Avinash replied:
var minheight = 20;
var maxheight = 100;
var time = 1000;
var timer = null;
var toggled = false;
window.onload = function() {
var controler = document.getElementById('slide');
var slider = document.getElementById('slider');
slider.style.height = minheight + 'px'; //not so imp,just for my example
controler.onclick = function() {
clearInterval(timer);
var instanceheight = parseInt(slider.style.height); // Current height
var init = (new Date()).getTime(); //start time
var height = (toggled = !toggled) ? maxheight: minheight; //if toggled
var disp = height - parseInt(slider.style.height);
timer = setInterval(function() {
var instance = (new Date()).getTime() - init; //animating time
if(instance <= time ) { //0 -> time seconds
var pos = instanceheight + Math.floor(disp * instance / time);
slider.style.height = pos + 'px';
}else {
slider.style.height = height + 'px'; //safety side ^^
clearInterval(timer);
}
},1);
};
};
You can see it here at this URL:
http://jsbin.com/azewi5
Use animate
Also, use .on
<script type="text/javascript">
$('.chat_close').on('click', function(e){
$('.chat_box').animate({"top": "200px");
});
</script>
HTML:
<div class="chat_close">
</div>
I have to repair bottom slider on http://rhemapress.pl/www_wopr/ . If you see when you click right arrow twice, then animation back to start and animate again. Here when i click one on right arrow time this should be blocked and not possible to click second time.
Numer of moves right is created dynamicly by checkWidth();
function checkWidth() {
var elements = $('.items').children().length;
var width = Math.ceil(elements / 5) * 820;
return width;
}
This return realWidth witch is something like limit of offset. Variable offset is setted to 0 at start. So, if i click right, then in method moveRight() is checked if element can be moved and it's move. At end offset is increment by 820px (one page of slider), so if we've got 2 pages, then next move can't be called. But it is and this is problem! :/
My code
<script type="text/javascript">
$(document).ready(function() {
$('a.prev').bind('click',moveLeft);
$('a.next').bind('click',moveRight);
var realWidth = checkWidth();
realWidth -= 820;
var offset = 0;
function moveLeft(e) {
var position = $('.items').position();
var elements = $('.items').children().length;
if ((elements > 5) && ((offset - 820) >= 0) ) {
$('.items').animate({
'left': (position.left + 820)
}, 300, function() {
offset -= 820;
});
}
}
function moveRight(e) {
var position = $('.items').position();
var elements = $('.items').children().length;
if ((elements > 5) && ((offset + 820) <= realWidth)) {
$('.items').animate({
'left': (position.left - 820)
}, 300, function() {
offset += 820;
});
}
}
function checkWidth() {
var elements = $('.items').children().length;
var width = Math.ceil(elements / 5) * 820;
return width;
}
});
</script>
How can i do this correctly?
It seems like you want to prevent the click event from firing before the current animation is complete. You can do this by preventing the rest of the function from executing if the element is currently being animated:
function moveLeft(e) {
if ($(this).is(":animated")) {
return false;
}
I built a kind of chat in JS and then I wanted that when I got new message the chat automatically scrolled down (with animation...). Everything worked beautifully, but after the animation stopped the user couldn't scroll by himself; the chat automatically scrolled to the end.
So this is the code :
<!-- language:lang-js -->
var height = 1;
window.setInterval(function() {
var elem = document.getElementById('chat');
elem.scrollTop = height;
if (elem.scrollheight < height) {
clearInterval(this);
}
height += 2;
}, 50);
the clearInterval function expects a number. Using that should make it work correctly. You also have many syntax errors.
var intervalReference = window.setInterval(function() {
var elem = document.getElementById('chat');
elem.scrollTop = height;
if (elem.scrollHeight < height) {
clearInterval(intervalReference);
}
height += 2;
}, 50);
you should make a var holding the interval like this :
var height = 1;
var interval = window.setInterval( animate, 50 );
function animate() {
var elem = document.getElementById('chat');
elem.scrollTop = height;
if (elem.scrollHeight < height) {
clearInterval( interval );
}
height += 2;
}
this should work fine
I am doing a small javascript animation. this is my code :
window.onload = function () {
var heading = document.getElementsByTagName('h1')[0];
heading.onclick = function () {
var divHeight = 250;
var speed = 10;
var myInterval = 0;
alert(divHeight);
slide();
function slide() {
if (divHeight == 250) {
myInterval = setInterval(slideUp, 30);
} else {
myInterval = setInterval(slideDwn, 30);
alert('i am called as slide down')
}
}
function slideUp() {
var anima = document.getElementById('anima');
if (divHeight <= 0) {
divHeight = 0;
anima.style.height = '0px';
clearInterval(myInterval);
} else {
divHeight -= speed;
if (divHeight < 0) divHeight = 0;
anima.style.height = divHeight + 'px';
}
}
function slideDwn() {
var anima = document.getElementById('anima');
if (divHeight >= 250) {
divHeight = 250;
clearInterval(myInterval);
} else {
divHeight += speed;
anima.style.height = divHeight + 'px';
}
}
}
}
i am using above code for simple animation. i need to get the result 250 on the first click, as well second click i has to get 0 value. but it showing the 250 with unchanged. but i am assigning the value to set '0', once the div height reached to '0'.
what is the issue with my code? any one help me?
Everytime you click on the div the divHeight variable is reset to 250, thus your code never calls slideDwn. Moving the divHeight declaration outside the event handler should do the trick.
Also, your div wont have the correct size when any of the 2 animations end. You're setting the divHeight variable to 250 or 0 correctly, but never actually setting anima.style.height after that.
I've rewritten your code into something simpler and lighter. The main difference here is that we're using a single slide() function here, and that the height of the div in question is stored in a variable beforehand to ensure that the element slides into the correct position.
Note that this is a very simplistic implementation and assumes that the div carries no padding. (The code uses ele.clientHeight and ele.style.height interchangeably, which admittedly, is a pretty bad choice, but is done here to keep the code simple)
var heading = document.getElementsByTagName('h1')[0],
anima = document.getElementById('anima'),
divHeight = anima.clientHeight,
speed = 10,
myInterval = 0,
animating = false;
function slide(speed, goal) {
if(Math.abs(anima.clientHeight - goal) <= speed){
anima.style.height = goal + 'px';
animating = false;
clearInterval(myInterval);
} else if(anima.clientHeight - goal > 0){
anima.style.height = (anima.clientHeight - speed) + 'px';
} else {
anima.style.height = (anima.clientHeight + speed) + 'px';
}
}
heading.onclick = function() {
if(!animating) {
animating = true;
var goal = (anima.clientHeight >= divHeight) ? 0 : divHeight;
myInterval = setInterval(slide, 13, speed, goal);
}
}
See http://www.jsfiddle.net/yijiang/dWJgG/2/ for a simple demo.
I've corrected your code a bit (See working demo)
window.onload = function () {
var heading = document.getElementsByTagName('h1')[0];
var anima = document.getElementById('anima');
var divHeight = 250;
heading.onclick = function () {
var speed = 10;
var myInterval = 0;
function slideUp() {
divHeight -= speed;
if (divHeight <= 0) {
divHeight = 0;
clearInterval(myInterval);
}
anima.style.height = divHeight + 'px';
}
function slideDwn() {
divHeight += speed;
if (divHeight >= 250) {
divHeight = 250;
clearInterval(myInterval);
}
anima.style.height = divHeight + 'px';
}
function slide() {
console.log(divHeight )
if (divHeight == 250) {
myInterval = setInterval(slideUp, 30);
} else {
myInterval = setInterval(slideDwn, 30);
}
}
slide();
}
}