I want to detect if user scrolled to the end of the window then make a trigger click to a "show more" button like Facebook newsfeed.
$(window).scroll(function() {
if($(window).scrollTop() + $(window).height() == $(document).height()){
$('.feed-show-more-button').trigger('click');
}
});
this is my code but it's not working only if i scrolled to the end of the window then go back to the top
Anyone can help ?
Try this
var CheckIfScrollBottom = debouncer(function() {
if (getDocHeight() == getScrollXY()[1] + window.innerHeight) {
$('.feed-show-more-button').trigger('click');
}
}, 500);
document.addEventListener('scroll', CheckIfScrollBottom);
function debouncer(a, b, c) {
var d;
return function() {
var e = this,
f = arguments,
g = function() {
d = null, c || a.apply(e, f)
},
h = c && !d;
clearTimeout(d), d = setTimeout(g, b), h && a.apply(e, f)
}
}
function getScrollXY() {
var a = 0,
b = 0;
return "number" == typeof window.pageYOffset ? (b = window.pageYOffset, a = window.pageXOffset) : document.body && (document.body.scrollLeft || document.body.scrollTop) ? (b = document.body.scrollTop, a = document.body.scrollLeft) : document.documentElement && (document.documentElement.scrollLeft || document.documentElement.scrollTop) && (b = document.documentElement.scrollTop, a = document.documentElement.scrollLeft), [a, b]
}
function getDocHeight() {
var a = document;
return Math.max(a.body.scrollHeight, a.documentElement.scrollHeight, a.body.offsetHeight, a.documentElement.offsetHeight, a.body.clientHeight, a.documentElement.clientHeight)
}
Added jsfiddle
http://jsfiddle.net/3unv01or/
var processing;
$(document).ready(function(){
$(document).scroll(function(e){
if (processing)
return false;
if ($(window).scrollTop() >= ($(document).height() - $(window).height())){
console.log('in it');
processing = true;
$('#container').append('More Content Added');
console.log($('#container'));
processing = false;
});
}
});
});
.loadedcontent {min-height: 800px; }
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="container">Hello world<div class="loadedcontent"></div></div>
Related
Here is the code.
I think the main problems are just things I can not see because I have been staring at it for too long. I've been looking at the logic of it and it all looks fine but I know I must have made some errors somewhere (I'm guessing the errors are mostly in the second script not the first.
<SCRIPT LANGUAGE="JavaScript1.2">
<!-- Begin
function BrowserCheck() {
var b = navigator.appName;
if (b == "Netscape") this.b = "NS";
else if (b == "Microsoft Internet Explorer") this.b = "IE";
else this.b = b;
this.v = parseInt(navigator.appVersion);
this.NS = (this.b == "NS" && this.v>=4);
this.NS4 = (this.b == "NS" && this.v == 4);
this.NS5 = (this.b == "NS" && this.v == 5);
this.IE = (this.b == "IE" && this.v>=4);
this.IE4 = (navigator.userAgent.indexOf('MSIE 4')>0);
this.IE5 = (navigator.userAgent.indexOf('MSIE 5')>0);
if (this.IE5 || this.NS5) this.VER5 = true;
if (this.IE4 || this.NS4) this.VER4 = true;
this.OLD = (! this.VER5 && ! this.VER4) ? true : false;
this.min = (this.NS||this.IE);
}
is = new BrowserCheck();
// End -->
</script>
</HEAD>
<BODY>
<center>
Click on the screen to drop lemon<br>
<div id="staticBall" style="position:relative;visibility:visible">
<img src="lemon.png" height=30 width=30 alt="Static lemon">
</div>
</center>
<div id="ball" style="visibility:hidden; position:absolute; left:100; top:10; height:34; width:34">
<img src="lemon.png" height=30 width=30 alt="Bouncing lemon">
</div>
<script language="Javascript1.2">
<!-- Begin
iter = 0;
setId = 0;
down = true;
up = false;
bouncingBall = (is.VER5) ? document.getElementId("ball").style
: (is.NS) ? document.layers["ball"]
: document.all["ball"].style;
stillBall = (is.VER5) ? document.getElementId("staticBall").style
: (is.NS) ? document.layers["staticBall"] : document.all["staticBall"].style;
winH = (is.NS) ? window.innerHeight - 55 : document.body.offsetHeight - 55;
document.onmouseup = buttonUp;
if (is.NS4)
document.captureEvents(Event.MOUSEUP);
function buttonUp(e) {
if ( ((is.NS) ? e.which : event.button) != 1) return true;
if (setId != 0) clearInterval(setId);
bouncingBall.visibility="visible";
stillBall.visibility="hidden";
bouncingBall.left = (is.NS) ? e.pageX - 15 : event.offsetX - 15;
bouncingBall.top = (is.NS) ? e.pageY - 15 : event.offsetY - 15;
iter = 0;
setId = setInterval("generateGravity()", 20);
return true;
}
function generateGravity {
if ((parseInt(bouncingBall.top)+iter < winH) && down) {
bouncingBall.top = parseInt(bouncingBall.top) + iter;
iter++;
return;
}
else {
if ((parseInt(bouncingBall.top)< winH) && down) {
bouncingBall.top = winH + 5;
return;
}
down = false;
up = true;
if (iter < 0 && parseint(bouncingBall.top) > winH) {
clearInterval(setId);
bouncingBall.visibility = "hidden";
stillBall.visibility="visible";
setId = 0;
}
if (parseInt(bouncingBall.top) > 0 && up && iter >= 0) {
bouncingBall.top = parseint(bouncingBall.top) - iter;
iter--;
if (iter%3 == 0) iter--;
return;
}
down = true;
up = false;
}
}
// End -->
</script>
<p><center>
</center><p>
</BODY>
</HTML>
You are working with an old version of javascript that your browser probably isn't using.
There were two errors in the console when I copied it over to my machine.
Uncaught SyntaxError: Unexpected token {
file:///home/tkrg/lemon.png Failed to load resource: net::ERR_FILE_NOT_FOUND
For the first error, it seems like () was not written for the function. It said
function generateGravity {
Should say
function generateGravity() {
For the second error, I think it is safe to assume that you have the picture of the lemon.
There were two other things that did not work:
parseint()
is now
parseInt()
and this:
getElementId()
is now
getElementById()
The full code
<SCRIPT>
function BrowserCheck() {
var b = navigator.appName;
if (b == "Netscape") this.b = "NS";
else if (b == "Microsoft Internet Explorer") this.b = "IE";
else this.b = b;
this.v = parseInt(navigator.appVersion);
this.NS = (this.b == "NS" && this.v>=4);
this.NS4 = (this.b == "NS" && this.v == 4);
this.NS5 = (this.b == "NS" && this.v == 5);
this.IE = (this.b == "IE" && this.v>=4);
this.IE4 = (navigator.userAgent.indexOf('MSIE 4')>0);
this.IE5 = (navigator.userAgent.indexOf('MSIE 5')>0);
if (this.IE5 || this.NS5) this.VER5 = true;
if (this.IE4 || this.NS4) this.VER4 = true;
this.OLD = (! this.VER5 && ! this.VER4) ? true : false;
this.min = (this.NS||this.IE);
}
is = new BrowserCheck();
</script>
</HEAD>
<BODY>
<center>
Click on the screen to drop lemon<br>
<div id="staticBall" style="position:relative;visibility:visible">
<img src="lemon.png" height=30 width=30 alt="Static lemon">
</div>
</center>
<div id="ball" style="visibility:hidden; position:absolute; left:100; top:10; height:34; width:34">
<img src="lemon.png" height=30 width=30 alt="Bouncing lemon">
</div>
<script>
iter = 0;
setId = 0;
down = true;
up = false;
bouncingBall = (is.VER5) ? document.getElementById("ball").style
: (is.NS) ? document.layers["ball"]
: document.all["ball"].style;
stillBall = (is.VER5) ? document.getElementById("staticBall").style
: (is.NS) ? document.layers["staticBall"] : document.all["staticBall"].style;
winH = (is.NS) ? window.innerHeight - 55 : document.body.offsetHeight - 55;
document.onmouseup = buttonUp;
if (is.NS4)
document.captureEvents(Event.MOUSEUP);
function buttonUp(e) {
if ( ((is.NS) ? e.which : event.button) != 1) return true;
if (setId != 0) clearInterval(setId);
bouncingBall.visibility="visible";
stillBall.visibility="hidden";
bouncingBall.left = (is.NS) ? e.pageX - 15 : event.offsetX - 15;
bouncingBall.top = (is.NS) ? e.pageY - 15 : event.offsetY - 15;
iter = 0;
setId = setInterval("generateGravity()", 20);
return true;
}
function generateGravity() {
if ((parseInt(bouncingBall.top)+iter < winH) && down) {
bouncingBall.top = parseInt(bouncingBall.top) + iter;
iter++;
return;
}
else {
if ((parseInt(bouncingBall.top)< winH) && down) {
bouncingBall.top = winH + 5;
return;
}
down = false;
up = true;
if (iter < 0 && parseInt(bouncingBall.top) > winH) {
clearInterval(setId);
bouncingBall.visibility = "hidden";
stillBall.visibility="visible";
setId = 0;
}
if (parseInt(bouncingBall.top) > 0 && up && iter >= 0) {
bouncingBall.top = parseInt(bouncingBall.top) - iter;
iter--;
if (iter%3 == 0) iter--;
return;
}
down = true;
up = false;
}
}
</script>
<p><center>
</center><p>
</BODY>
</HTML>
Hi I'm working on a site with a infinite scroll script and am trying to figure out how to add a callback for Image Lightbox:
http://osvaldas.info/image-lightbox-responsive-touch-friendly
I've managed to get the images on the second page to work with image light box and have them styled with the same variables using this:
$(function () {
$('a[data-imagelightbox="d"]').imageLightbox({
onStart: function () {
overlayOn();
},
onLoadStart: function () {
captionOff();
activityIndicatorOn();
},
onLoadEnd: function () {
captionOn();
activityIndicatorOff();
},
onEnd: function () {
captionOff();
overlayOff();
activityIndicatorOff();
}
});
});
My problem is that while the images from "page two" can be viewed within the lightbox, they are not added to the gallery/roll for the user to cycle/navigate through. When the user views an image from "page two" and attempts to cycle through they can only view images from "page one".
Anyone know what script I should be using to get the images refreshed/added after infinite scroll loads more content? Thanks in advance!!
Here is the full js for the Image Lightbox:
var cssTransitionSupport = function () {
var s = document.body || document.documentElement,
s = s.style;
if (s.WebkitTransition == '') return '-webkit-';
if (s.MozTransition == '') return '-moz-';
if (s.OTransition == '') return '-o-';
if (s.transition == '') return '';
return false;
},
isCssTransitionSupport = cssTransitionSupport() === false ? false : true,
cssTransitionTranslateX = function (element, positionX, speed) {
var options = {}, prefix = cssTransitionSupport();
options[prefix + 'transform'] = 'translateX(' + positionX + ')';
options[prefix + 'transition'] = prefix + 'transform ' + speed + 's linear';
element.css(options);
},
hasTouch = ('ontouchstart' in window),
hasPointers = window.navigator.pointerEnabled || window.navigator.msPointerEnabled,
wasTouched = function (event) {
if (hasTouch) return true;
if (!hasPointers || typeof event === 'undefined' || typeof event.pointerType === 'undefined') return false;
if (typeof event.MSPOINTER_TYPE_MOUSE !== 'undefined') {
if (event.MSPOINTER_TYPE_MOUSE != event.pointerType) return true;
} else if (event.pointerType != 'mouse') return true;
return false;
};
$.fn.imageLightbox = function (options) {
var options = $.extend({
selector: 'id="imagelightbox"',
allowedTypes: 'png|jpg|jpeg|gif',
animationSpeed: 250,
preloadNext: true,
enableKeyboard: true,
quitOnEnd: false,
quitOnImgClick: false,
quitOnDocClick: true,
onStart: false,
onEnd: false,
onLoadStart: false,
onLoadEnd: false
},
options),
targets = $([]),
target = $(),
image = $(),
imageWidth = 0,
imageHeight = 0,
swipeDiff = 0,
inProgress = false,
isTargetValid = function (element) {
return $(element).prop('tagName').toLowerCase() == 'a' && (new RegExp('\.(' + options.allowedTypes + ')$', 'i')).test($(element).attr('href'));
},
setImage = function () {
if (!image.length) return true;
var screenWidth = $(window).width() * 0.8,
screenHeight = $(window).height() * 0.9,
tmpImage = new Image();
tmpImage.src = image.attr('src');
tmpImage.onload = function () {
imageWidth = tmpImage.width;
imageHeight = tmpImage.height;
if (imageWidth > screenWidth || imageHeight > screenHeight) {
var ratio = imageWidth / imageHeight > screenWidth / screenHeight ? imageWidth / screenWidth : imageHeight / screenHeight;
imageWidth /= ratio;
imageHeight /= ratio;
}
image.css({
'width': imageWidth + 'px',
'height': imageHeight + 'px',
'top': ($(window).height() - imageHeight) / 2 + 'px',
'left': ($(window).width() - imageWidth) / 2 + 'px'
});
};
},
loadImage = function (direction) {
if (inProgress) return false;
direction = typeof direction === 'undefined' ? false : direction == 'left' ? 1 : -1;
if (image.length) {
if (direction !== false && (targets.length < 2 || (options.quitOnEnd === true && ((direction === -1 && targets.index(target) == 0) || (direction === 1 && targets.index(target) == targets.length - 1))))) {
quitLightbox();
return false;
}
var params = {
'opacity': 0
};
if (isCssTransitionSupport) cssTransitionTranslateX(image, (100 * direction) - swipeDiff + 'px', options.animationSpeed / 1000);
else params.left = parseInt(image.css('left')) + 100 * direction + 'px';
image.animate(params, options.animationSpeed, function () {
removeImage();
});
swipeDiff = 0;
}
inProgress = true;
if (options.onLoadStart !== false) options.onLoadStart();
setTimeout(function () {
image = $('<img ' + options.selector + ' />')
.attr('src', target.attr('href'))
.load(function () {
image.appendTo('body');
setImage();
var params = {
'opacity': 1
};
image.css('opacity', 0);
if (isCssTransitionSupport) {
cssTransitionTranslateX(image, -100 * direction + 'px', 0);
setTimeout(function () {
cssTransitionTranslateX(image, 0 + 'px', options.animationSpeed / 1000)
}, 50);
} else {
var imagePosLeft = parseInt(image.css('left'));
params.left = imagePosLeft + 'px';
image.css('left', imagePosLeft - 100 * direction + 'px');
}
image.animate(params, options.animationSpeed, function () {
inProgress = false;
if (options.onLoadEnd !== false) options.onLoadEnd();
});
if (options.preloadNext) {
var nextTarget = targets.eq(targets.index(target) + 1);
if (!nextTarget.length) nextTarget = targets.eq(0);
$('<img />').attr('src', nextTarget.attr('href')).load();
}
})
.error(function () {
if (options.onLoadEnd !== false) options.onLoadEnd();
})
var swipeStart = 0,
swipeEnd = 0,
imagePosLeft = 0;
image.on(hasPointers ? 'pointerup MSPointerUp' : 'click', function (e) {
e.preventDefault();
if (options.quitOnImgClick) {
quitLightbox();
return false;
}
if (wasTouched(e.originalEvent)) return true;
var posX = (e.pageX || e.originalEvent.pageX) - e.target.offsetLeft;
target = targets.eq(targets.index(target) - (imageWidth / 2 > posX ? 1 : -1));
if (!target.length) target = targets.eq(imageWidth / 2 > posX ? targets.length : 0);
loadImage(imageWidth / 2 > posX ? 'left' : 'right');
})
.on('touchstart pointerdown MSPointerDown', function (e) {
if (!wasTouched(e.originalEvent) || options.quitOnImgClick) return true;
if (isCssTransitionSupport) imagePosLeft = parseInt(image.css('left'));
swipeStart = e.originalEvent.pageX || e.originalEvent.touches[0].pageX;
})
.on('touchmove pointermove MSPointerMove', function (e) {
if (!wasTouched(e.originalEvent) || options.quitOnImgClick) return true;
e.preventDefault();
swipeEnd = e.originalEvent.pageX || e.originalEvent.touches[0].pageX;
swipeDiff = swipeStart - swipeEnd;
if (isCssTransitionSupport) cssTransitionTranslateX(image, -swipeDiff + 'px', 0);
else image.css('left', imagePosLeft - swipeDiff + 'px');
})
.on('touchend touchcancel pointerup pointercancel MSPointerUp MSPointerCancel', function (e) {
if (!wasTouched(e.originalEvent) || options.quitOnImgClick) return true;
if (Math.abs(swipeDiff) > 50) {
target = targets.eq(targets.index(target) - (swipeDiff < 0 ? 1 : -1));
if (!target.length) target = targets.eq(swipeDiff < 0 ? targets.length : 0);
loadImage(swipeDiff > 0 ? 'right' : 'left');
} else {
if (isCssTransitionSupport) cssTransitionTranslateX(image, 0 + 'px', options.animationSpeed / 1000);
else image.animate({
'left': imagePosLeft + 'px'
}, options.animationSpeed / 2);
}
});
}, options.animationSpeed + 100);
},
removeImage = function () {
if (!image.length) return false;
image.remove();
image = $();
},
quitLightbox = function () {
if (!image.length) return false;
image.animate({
'opacity': 0
}, options.animationSpeed, function () {
removeImage();
inProgress = false;
if (options.onEnd !== false) options.onEnd();
});
};
$(window).on('resize', setImage);
if (options.quitOnDocClick) {
$(document).on(hasTouch ? 'touchend' : 'click', function (e) {
if (image.length && !$(e.target).is(image)) quitLightbox();
})
}
if (options.enableKeyboard) {
$(document).on('keyup', function (e) {
if (!image.length) return true;
e.preventDefault();
if (e.keyCode == 27) quitLightbox();
if (e.keyCode == 37 || e.keyCode == 39) {
target = targets.eq(targets.index(target) - (e.keyCode == 37 ? 1 : -1));
if (!target.length) target = targets.eq(e.keyCode == 37 ? targets.length : 0);
loadImage(e.keyCode == 37 ? 'left' : 'right');
}
});
}
$(document).on('click', this.selector, function (e) {
if (!isTargetValid(this)) return true;
e.preventDefault();
if (inProgress) return false;
inProgress = false;
if (options.onStart !== false) options.onStart();
target = $(this);
loadImage();
});
this.each(function () {
if (!isTargetValid(this)) return true;
targets = targets.add($(this));
});
this.switchImageLightbox = function (index) {
var tmpTarget = targets.eq(index);
if (tmpTarget.length) {
var currentIndex = targets.index(target);
target = tmpTarget;
loadImage(index < currentIndex ? 'left' : 'right');
}
return this;
};
this.quitImageLightbox = function () {
quitLightbox();
return this;
};
return this;
};
Firstly,
$(function () {
window.lightbox = $('a[data-imagelightbox="d"]').imageLightbox();
});
At the end of your "imagelightbox.js", Add the below code.
this.quitImageLightbox = function() {
quitLightbox();
return this;
};
this.loadImages = function(images_array) {
targets = images_array;
console.log(targets);
console.log(targets.length);
return this;
};
And when you get newly loaded images
windows.lightbox.loadImages(images_array)
and it should be working...!
How do I change this so nothing happens if the element being faded in is already visibility = 'visible' It's basically changing visibility based on mouse position, but right now it fades in every time the mouse moves. Demo: https://dl.dropboxusercontent.com/u/246684898/VipSitaraman.com/index2.htm. If you're bored, feel free to steal my code cuz coding it was a pain and I'd love to help someone else...just credit me.
$(".txt").mousemove(function(e){
var offset = $(this).offset();
var a = e.clientX - offset.left;
var b = e.clientY - offset.top;
var c = 0
if (a > 0 && a <= 750) {
$('#s1').css('visibility','visible').hide().fadeIn();
$('#s2,#s3,#s4,#s5,#s6').css('visibility','hidden');
$('#home').text(c + ", "+ b);
} else if (a > 750 && a <= 1500) {
$('#s2').css('visibility','visible').hide().fadeIn();
$('#s1,#s3,#s4,#s5,#s6').css('visibility','hidden');
} else if (a > 1500 && a <= 2250) {
$('#s3').css('visibility','visible').hide().fadeIn();
$('#s1,#s2,#s4,#s5,#s6').css('visibility','hidden');
} else if (a > 2250 && a <= 3000) {
$('#s4').css('visibility','visible').hide().fadeIn();
$('#s1,#s2,#s3,#s5,#s6').css('visibility','hidden');
} else if (a > 3000 && a <= 3750) {
$('#s5').css('visibility','visible').hide().fadeIn();
$('#s1,#s2,#s3,#s4,#s6').css('visibility','hidden');
} else if (a > 3750 && a <= 4500) {
$('#s6').css('visibility','visible').hide().fadeIn();
$('#s1,#s2,#s3,#s5,#s4').css('visibility','hidden');
} else {
$('#s1,#s2,#s3,#s5,#s4,#s6').css('visibility','hidden');
}
});
});
</script>
Try
var $ss = $('.s');
$(".txt").mousemove(function (e) {
var offset = $(this).offset();
var a = e.clientX - offset.left;
var b = e.clientY - offset.top;
var c = 0;
var d = Math.ceil(a / 750);
if (d > 0 && d <= $ss.length) {
var $t = $ss.eq(d - 1);
if (!$t.data('visible')) {
$t.css('visibility', 'visible').hide().fadeIn().data('visible', true);
$ss.not($t).css('visibility', 'hidden').data('visible', false);
$('#home').text(c + ", " + b);
}
} else {
$ss.css('visibility', 'hidden');
}
});
Demo: Fiddle
I am using the Easy Smooth Scroll Plugin for Wordpress.
Below is the .js file that the plugin uses:
var ss = {
fixAllLinks: function() {
var allLinks = document.getElementsByTagName('a');
for (var i = 0; i < allLinks.length; i++) {
var lnk = allLinks[i];
if ((lnk.href && lnk.href.indexOf('#') != -1) && ((lnk.pathname == location.pathname) || ('/' + lnk.pathname == location.pathname)) && (lnk.search == location.search)) {
ss.addEvent(lnk, 'click', ss.smoothScroll);
}
}
},
smoothScroll: function(e) {
if (window.event) {
target = window.event.srcElement;
} else if (e) {
target = e.target;
} else return;
if (target.nodeName.toLowerCase() != 'a') {
target = target.parentNode;
}
if (target.nodeName.toLowerCase() != 'a') return;
anchor = target.hash.substr(1);
var allLinks = document.getElementsByTagName('a');
var destinationLink = null;
for (var i = 0; i < allLinks.length; i++) {
var lnk = allLinks[i];
if (lnk.name && (lnk.name == anchor)) {
destinationLink = lnk;
break;
}
}
if (!destinationLink) destinationLink = document.getElementById(anchor);
if (!destinationLink) return true;
var destx = destinationLink.offsetLeft;
var desty = destinationLink.offsetTop;
var thisNode = destinationLink;
while (thisNode.offsetParent && (thisNode.offsetParent != document.body)) {
thisNode = thisNode.offsetParent;
destx += thisNode.offsetLeft;
desty += thisNode.offsetTop;
}
clearInterval(ss.INTERVAL);
cypos = ss.getCurrentYPos();
ss_stepsize = parseInt((desty - cypos) / ss.STEPS);
ss.INTERVAL = setInterval('ss.scrollWindow(' + ss_stepsize + ',' + desty + ',"' + anchor + '")', 10);
if (window.event) {
window.event.cancelBubble = true;
window.event.returnValue = false;
}
if (e && e.preventDefault && e.stopPropagation) {
e.preventDefault();
e.stopPropagation();
}
},
scrollWindow: function(scramount, dest, anchor) {
wascypos = ss.getCurrentYPos();
isAbove = (wascypos < dest);
window.scrollTo(0, wascypos + scramount);
iscypos = ss.getCurrentYPos();
isAboveNow = (iscypos < dest);
if ((isAbove != isAboveNow) || (wascypos == iscypos)) {
window.scrollTo(0, dest);
clearInterval(ss.INTERVAL);
location.hash = anchor;
}
},
getCurrentYPos: function() {
if (document.body && document.body.scrollTop) return document.body.scrollTop;
if (document.documentElement && document.documentElement.scrollTop) return document.documentElement.scrollTop;
if (window.pageYOffset) return window.pageYOffset;
return 0;
},
addEvent: function(elm, evType, fn, useCapture) {
if (elm.addEventListener) {
elm.addEventListener(evType, fn, useCapture);
return true;
} else if (elm.attachEvent) {
var r = elm.attachEvent("on" + evType, fn);
return r;
} else {
alert("Handler could not be removed");
}
}
}
ss.STEPS = 25;
ss.addEvent(window, "load", ss.fixAllLinks);
The live page is here: http://iamjoepro.com/album/promaha/
I have the smooth scroll scrolling to an anchor, but I would like to offset it by the height of my fixed header (120px)
I am no javascript expert, I'm hoping this is easy for someone, but I can't decipher where to add the offset in my .js file?
I had a similar issue and found that the following solution worked for me.
Change the line:
var desty = destinationLink.offsetTop;
to read:
var desty = destinationLink.offsetTop - 120;
(where '120' is the height in pixels of your fixed header)
Then, remove the line:
location.hash = anchor;
(otherwise, the page will scroll to your 120px offset but then return back to the location of the anchor)
Hope this helps!
I needed to make a floating menu, I searched online and found a script here http://www.jtricks.com/javascript/navigation/floating.html
/* Script by: www.jtricks.com
* Version: 1.12 (20120823)
* Latest version: www.jtricks.com/javascript/navigation/floating.html
*
* License:
* GNU/GPL v2 or later http://www.gnu.org/licenses/gpl-2.0.html
*/
var floatingMenu =
{
hasInner: typeof(window.innerWidth) == 'number',
hasElement: typeof(document.documentElement) == 'object'
&& typeof(document.documentElement.clientWidth) == 'number'};
var floatingArray =
[
];
floatingMenu.add = function(obj, options)
{
var name;
var menu;
if (typeof(obj) === "string")
name = obj;
else
menu = obj;
if (options == undefined)
{
floatingArray.push(
{
id: name,
menu: menu,
targetLeft: 0,
targetTop: 0,
distance: .07,
snap: true,
updateParentHeight: false
});
}
else
{
floatingArray.push(
{
id: name,
menu: menu,
targetLeft: options.targetLeft,
targetRight: options.targetRight,
targetTop: options.targetTop,
targetBottom: options.targetBottom,
centerX: options.centerX,
centerY: options.centerY,
prohibitXMovement: options.prohibitXMovement,
prohibitYMovement: options.prohibitYMovement,
distance: options.distance != undefined ? options.distance : .07,
snap: options.snap,
ignoreParentDimensions: options.ignoreParentDimensions,
updateParentHeight:
options.updateParentHeight == undefined
? false
: options.updateParentHeight,
scrollContainer: options.scrollContainer,
scrollContainerId: options.scrollContainerId,
confinementArea: options.confinementArea,
confinementAreaId:
options.confinementArea != undefined
&& options.confinementArea.substring(0, 1) == '#'
? options.confinementArea.substring(1)
: undefined,
confinementAreaClassRegexp:
options.confinementArea != undefined
&& options.confinementArea.substring(0, 1) == '.'
? new RegExp("(^|\\s)" + options.confinementArea.substring(1) + "(\\s|$)")
: undefined
});
}
};
floatingMenu.findSingle = function(item)
{
if (item.id)
item.menu = document.getElementById(item.id);
if (item.scrollContainerId)
item.scrollContainer = document.getElementById(item.scrollContainerId);
};
floatingMenu.move = function (item)
{
if (!item.prohibitXMovement)
{
item.menu.style.left = item.nextX + 'px';
item.menu.style.right = '';
}
if (!item.prohibitYMovement)
{
item.menu.style.top = item.nextY + 'px';
item.menu.style.bottom = '';
}
};
floatingMenu.scrollLeft = function(item)
{
// If floating within scrollable container use it's scrollLeft
if (item.scrollContainer)
return item.scrollContainer.scrollLeft;
var w = window.top;
return this.hasInner
? w.pageXOffset
: this.hasElement
? w.document.documentElement.scrollLeft
: w.document.body.scrollLeft;
};
floatingMenu.scrollTop = function(item)
{
// If floating within scrollable container use it's scrollTop
if (item.scrollContainer)
return item.scrollContainer.scrollTop;
var w = window.top;
return this.hasInner
? w.pageYOffset
: this.hasElement
? w.document.documentElement.scrollTop
: w.document.body.scrollTop;
};
floatingMenu.windowWidth = function()
{
return this.hasElement
? document.documentElement.clientWidth
: document.body.clientWidth;
};
floatingMenu.windowHeight = function()
{
if (floatingMenu.hasElement && floatingMenu.hasInner)
{
// Handle Opera 8 problems
return document.documentElement.clientHeight > window.innerHeight
? window.innerHeight
: document.documentElement.clientHeight
}
else
{
return floatingMenu.hasElement
? document.documentElement.clientHeight
: document.body.clientHeight;
}
};
floatingMenu.documentHeight = function()
{
var innerHeight = this.hasInner
? window.innerHeight
: 0;
var body = document.body,
html = document.documentElement;
return Math.max(
body.scrollHeight,
body.offsetHeight,
html.clientHeight,
html.scrollHeight,
html.offsetHeight,
innerHeight);
};
floatingMenu.documentWidth = function()
{
var innerWidth = this.hasInner
? window.innerWidth
: 0;
var body = document.body,
html = document.documentElement;
return Math.max(
body.scrollWidth,
body.offsetWidth,
html.clientWidth,
html.scrollWidth,
html.offsetWidth,
innerWidth);
};
floatingMenu.calculateCornerX = function(item)
{
var offsetWidth = item.menu.offsetWidth;
var result = this.scrollLeft(item) - item.parentLeft;
if (item.centerX)
{
result += (this.windowWidth() - offsetWidth)/2;
}
else if (item.targetLeft == undefined)
{
result += this.windowWidth() - item.targetRight - offsetWidth;
}
else
{
result += item.targetLeft;
}
if (document.body != item.menu.parentNode
&& result + offsetWidth >= item.confinedWidthReserve)
{
result = item.confinedWidthReserve - offsetWidth;
}
if (result < 0)
result = 0;
return result;
};
floatingMenu.calculateCornerY = function(item)
{
var offsetHeight = item.menu.offsetHeight;
var result = this.scrollTop(item) - item.parentTop;
if (item.centerY)
{
result += (this.windowHeight() - offsetHeight)/2;
}
else if (item.targetTop === undefined)
{
result += this.windowHeight() - item.targetBottom - offsetHeight;
}
else
{
result += item.targetTop;
}
if (document.body != item.menu.parentNode
&& result + offsetHeight >= item.confinedHeightReserve)
{
result = item.confinedHeightReserve - offsetHeight;
}
if (result < 0)
result = 0;
return result;
};
floatingMenu.isConfinementArea = function(item, area)
{
return item.confinementAreaId != undefined
&& area.id == item.confinementAreaId
|| item.confinementAreaClassRegexp != undefined
&& area.className
&& item.confinementAreaClassRegexp.test(area.className);
};
floatingMenu.computeParent = function(item)
{
if (item.ignoreParentDimensions)
{
item.confinedHeightReserve = this.documentHeight();
item.confinedWidthReserver = this.documentWidth();
item.parentLeft = 0;
item.parentTop = 0;
return;
}
var parentNode = item.menu.parentNode;
var parentOffsets = this.offsets(parentNode, item);
item.parentLeft = parentOffsets.left;
item.parentTop = parentOffsets.top;
item.confinedWidthReserve = parentNode.clientWidth;
// We could have absolutely-positioned DIV wrapped
// inside relatively-positioned. Then parent might not
// have any height. Try to find parent that has
// and try to find whats left of its height for us.
var obj = parentNode;
var objOffsets = this.offsets(obj, item);
if (item.confinementArea == undefined)
{
while (obj.clientHeight + objOffsets.top
< item.menu.scrollHeight + parentOffsets.top
|| item.menu.parentNode == obj
&& item.updateParentHeight
&& obj.clientHeight + objOffsets.top
== item.menu.scrollHeight + parentOffsets.top)
{
obj = obj.parentNode;
objOffsets = this.offsets(obj, item);
}
}
else
{
while (obj.parentNode != undefined
&& !this.isConfinementArea(item, obj))
{
obj = obj.parentNode;
objOffsets = this.offsets(obj, item);
}
}
item.confinedHeightReserve = obj.clientHeight
- (parentOffsets.top - objOffsets.top);
};
floatingMenu.offsets = function(obj, item)
{
var result =
{
left: 0,
top: 0
};
if (obj === item.scrollContainer)
return;
while (obj.offsetParent && obj.offsetParent != item.scrollContainer)
{
result.left += obj.offsetLeft;
result.top += obj.offsetTop;
obj = obj.offsetParent;
}
if (window == window.top)
return result;
// we're IFRAMEd
var iframes = window.top.document.body.getElementsByTagName("IFRAME");
for (var i = 0; i < iframes.length; i++)
{
if (iframes[i].contentWindow != window)
continue;
obj = iframes[i];
while (obj.offsetParent)
{
result.left += obj.offsetLeft;
result.top += obj.offsetTop;
obj = obj.offsetParent;
}
}
return result;
};
floatingMenu.doFloatSingle = function(item)
{
this.findSingle(item);
if (item.updateParentHeight)
{
item.menu.parentNode.style.minHeight =
item.menu.scrollHeight + 'px';
}
var stepX, stepY;
this.computeParent(item);
var cornerX = this.calculateCornerX(item);
var stepX = (cornerX - item.nextX) * item.distance;
if (Math.abs(stepX) < .5 && item.snap
|| Math.abs(cornerX - item.nextX) <= 1)
{
stepX = cornerX - item.nextX;
}
var cornerY = this.calculateCornerY(item);
var stepY = (cornerY - item.nextY) * item.distance;
if (Math.abs(stepY) < .5 && item.snap
|| Math.abs(cornerY - item.nextY) <= 1)
{
stepY = cornerY - item.nextY;
}
if (Math.abs(stepX) > 0 ||
Math.abs(stepY) > 0)
{
item.nextX += stepX;
item.nextY += stepY;
this.move(item);
}
};
floatingMenu.fixTargets = function()
{
};
floatingMenu.fixTarget = function(item)
{
};
floatingMenu.doFloat = function()
{
this.fixTargets();
for (var i=0; i < floatingArray.length; i++)
{
this.fixTarget(floatingArray[i]);
this.doFloatSingle(floatingArray[i]);
}
setTimeout('floatingMenu.doFloat()', 20);
};
floatingMenu.insertEvent = function(element, event, handler)
{
// W3C
if (element.addEventListener != undefined)
{
element.addEventListener(event, handler, false);
return;
}
var listener = 'on' + event;
// MS
if (element.attachEvent != undefined)
{
element.attachEvent(listener, handler);
return;
}
// Fallback
var oldHandler = element[listener];
element[listener] = function (e)
{
e = (e) ? e : window.event;
var result = handler(e);
return (oldHandler != undefined)
&& (oldHandler(e) == true)
&& (result == true);
};
};
floatingMenu.init = function()
{
floatingMenu.fixTargets();
for (var i=0; i < floatingArray.length; i++)
{
floatingMenu.initSingleMenu(floatingArray[i]);
}
setTimeout('floatingMenu.doFloat()', 100);
};
// Some browsers init scrollbars only after
// full document load.
floatingMenu.initSingleMenu = function(item)
{
this.findSingle(item);
this.computeParent(item);
this.fixTarget(item);
item.nextX = this.calculateCornerX(item);
item.nextY = this.calculateCornerY(item);
this.move(item);
};
floatingMenu.insertEvent(window, 'load', floatingMenu.init);
// Register ourselves as jQuery plugin if jQuery is present
if (typeof(jQuery) !== 'undefined')
{
(function ($)
{
$.fn.addFloating = function(options)
{
return this.each(function()
{
floatingMenu.add(this, options);
});
};
}) (jQuery);
}
The script requires the menu to have #floatdiv id. I made my div, #floatdiv, and added the following line of javascript to the head to make the action start working:
<script type="text/javascript">
floatingMenu.add('floatdiv',
{
targetLeft: 250,
targetTop: 290,
snap: true
});
</script>
the #floatdiv css is here,
#floatdiv{
height:45px;
width:830px;
z-index:2;
}
The script is working fine. When I scroll down, the menu float as specified. But I dun wanna the menu to float all the way with scrolling. I need the float of the menu to fire only when I enter specific divs not all the way with scrolling.. Any clues?
is this what look like?
html
<div id="header">HEADER</div>
<div id="content">
<div id="left">LEFT</div>
<div id="right">RIGHT</div>
</div>
<div id="footer">FOOTER</div>
js
$(function() {
var $sidebar = $("#right"),
$window = $(window),
rightOffset = $sidebar.offset(),
rightDelta = $("#footer").offset().top - $("#header").offset().top - $("#header").outerHeight() - $("#right").outerHeight(),
topPadding = 15;
$window.scroll(function() {
$sidebar.stop().animate({
marginTop: Math.max(Math.min($window.scrollTop() - rightOffset.top + topPadding, rightDelta), 0)
});
});
});
working demo
hope this help you
I wrote the script listed in the question.
The script is very versatile and can make div float within a specific area (e.g. another container div). Here are the instructions:
http://www.jtricks.com/javascript/navigation/floating/confined_demo.html