In this tutorial we will learn how to load your contents in your
website with some user experience to make it feel lively. In this we
will load the contents as they scroll down. The contents will come out
with a fadeIn effect and then it will move up slightly.
Step 1 : Include the Js files
You need to include the latest Jquery Library file.Here I used is
Then you need to include the wayfinder.js file to calculate the
scroll amount.
Step 2: Add the following CSS
Step 3 : Add class load-animate
Now you need to add a class name load-animate where you want the animation to happen.
Example Html :
Step 4: Initialize the script
Step 1 : Include the Js files
You need to include the latest Jquery Library file.Here I used is
<script src= "js/wayfinder.js" ></script> |
.load-animate {opacity: 0 ;} .fadeInUp {-webkit-animation-name: fadeInUp;-moz-animation-name: fadeInUp;-o-animation-name: fadeInUp;animation-name: fadeInUp;} .animated {-webkit-animation-duration: 1 s;-moz-animation-duration: 1 s;-o-animation-duration: 1 s;animation-duration: 1 s; -webkit-animation-fill-mode: both ;-moz-animation-fill-mode: both ;-o-animation-fill-mode: both ;animation-fill-mode: both ; } @-webkit-keyframes fadeInUp{ 0% {opacity: 0 ;-webkit-transform:translateY( 20px )} 100% {opacity: 1 ;-webkit-transform:translateY( 0 )}}@-moz-keyframes fadeInUp{ 0% {opacity: 0 ;-moz-transform:translateY( 20px )} 100% {opacity: 1 ;-moz-transform:translateY( 0 )}}@-o-keyframes fadeInUp{ 0% {opacity: 0 ;-o-transform:translateY( 20px )} 100% {opacity: 1 ;-o-transform:translateY( 0 )}}@keyframes fadeInUp{ 0% {opacity: 0 ;transform:translateY( 20px )} 100% {opacity: 1 ;transform:translateY( 0 )}}.fadeInUp{-webkit-animation-name:fadeInUp;-moz-animation-name:fadeInUp;-o-animation-name:fadeInUp;animation-name:fadeInUp} |
Now you need to add a class name load-animate where you want the animation to happen.
Example Html :
< div class = "load-animate" id = "inner1" > </ div > |
$(document).ready(
function
() {
jQuery(
'.load-animate'
).waypoint({
triggerOnce:
true
,
offset:
'70%'
,
handler:
function
() {
jQuery(
this
).addClass(
'animated fadeInUp'
);
}
});
});
JS
--------wayfinder.js----
// Generated by CoffeeScript 1.4.0 /* jQuery Waypoints - v2.0.2 Copyright (c) 2011-2013 Caleb Troughton Dual licensed under the MIT license and GPL license. https://github.com/imakewebthings/jquery-waypoints/blob/master/licenses.txt */ (function(){var t=[].indexOf||function(t){for(var e=0,n=this.length;e<n;e++){if(e in this&&this[e]===t)return e}return-1},e=[].slice;(function(t,e){if(typeof define==="function"&&define.amd){return define("waypoints",["jquery"],function(n){return e(n,t)})}else{return e(t.jQuery,t)}})(this,function(n,r){var i,o,l,s,f,u,a,c,h,d,p,y,v,w,g,m;i=n(r);c=t.call(r,"ontouchstart")>=0;s={horizontal:{},vertical:{}};f=1;a={};u="waypoints-context-id";p="resize.waypoints";y="scroll.waypoints";v=1;w="waypoints-waypoint-ids";g="waypoint";m="waypoints";o=function(){function t(t){var e=this;this.$element=t;this.element=t[0];this.didResize=false;this.didScroll=false;this.id="context"+f++;this.oldScroll={x:t.scrollLeft(),y:t.scrollTop()};this.waypoints={horizontal:{},vertical:{}};t.data(u,this.id);a[this.id]=this;t.bind(y,function(){var t;if(!(e.didScroll||c)){e.didScroll=true;t=function(){e.doScroll();return e.didScroll=false};return r.setTimeout(t,n[m].settings.scrollThrottle)}});t.bind(p,function(){var t;if(!e.didResize){e.didResize=true;t=function(){n[m]("refresh");return e.didResize=false};return r.setTimeout(t,n[m].settings.resizeThrottle)}})}t.prototype.doScroll=function(){var t,e=this;t={horizontal:{newScroll:this.$element.scrollLeft(),oldScroll:this.oldScroll.x,forward:"right",backward:"left"},vertical:{newScroll:this.$element.scrollTop(),oldScroll:this.oldScroll.y,forward:"down",backward:"up"}};if(c&&(!t.vertical.oldScroll||!t.vertical.newScroll)){n[m]("refresh")}n.each(t,function(t,r){var i,o,l;l=[];o=r.newScroll>r.oldScroll;i=o?r.forward:r.backward;n.each(e.waypoints[t],function(t,e){var n,i;if(r.oldScroll<(n=e.offset)&&n<=r.newScroll){return l.push(e)}else if(r.newScroll<(i=e.offset)&&i<=r.oldScroll){return l.push(e)}});l.sort(function(t,e){return t.offset-e.offset});if(!o){l.reverse()}return n.each(l,function(t,e){if(e.options.continuous||t===l.length-1){return e.trigger([i])}})});return this.oldScroll={x:t.horizontal.newScroll,y:t.vertical.newScroll}};t.prototype.refresh=function(){var t,e,r,i=this;r=n.isWindow(this.element);e=this.$element.offset();this.doScroll();t={horizontal:{contextOffset:r?0:e.left,contextScroll:r?0:this.oldScroll.x,contextDimension:this.$element.width(),oldScroll:this.oldScroll.x,forward:"right",backward:"left",offsetProp:"left"},vertical:{contextOffset:r?0:e.top,contextScroll:r?0:this.oldScroll.y,contextDimension:r?n[m]("viewportHeight"):this.$element.height(),oldScroll:this.oldScroll.y,forward:"down",backward:"up",offsetProp:"top"}};return n.each(t,function(t,e){return n.each(i.waypoints[t],function(t,r){var i,o,l,s,f;i=r.options.offset;l=r.offset;o=n.isWindow(r.element)?0:r.$element.offset()[e.offsetProp];if(n.isFunction(i)){i=i.apply(r.element)}else if(typeof i==="string"){i=parseFloat(i);if(r.options.offset.indexOf("%")>-1){i=Math.ceil(e.contextDimension*i/100)}}r.offset=o-e.contextOffset+e.contextScroll-i;if(r.options.onlyOnScroll&&l!=null||!r.enabled){return}if(l!==null&&l<(s=e.oldScroll)&&s<=r.offset){return r.trigger([e.backward])}else if(l!==null&&l>(f=e.oldScroll)&&f>=r.offset){return r.trigger([e.forward])}else if(l===null&&e.oldScroll>=r.offset){return r.trigger([e.forward])}})})};t.prototype.checkEmpty=function(){if(n.isEmptyObject(this.waypoints.horizontal)&&n.isEmptyObject(this.waypoints.vertical)){this.$element.unbind([p,y].join(" "));return delete a[this.id]}};return t}();l=function(){function t(t,e,r){var i,o;r=n.extend({},n.fn[g].defaults,r);if(r.offset==="bottom-in-view"){r.offset=function(){var t;t=n[m]("viewportHeight");if(!n.isWindow(e.element)){t=e.$element.height()}return t-n(this).outerHeight()}}this.$element=t;this.element=t[0];this.axis=r.horizontal?"horizontal":"vertical";this.callback=r.handler;this.context=e;this.enabled=r.enabled;this.id="waypoints"+v++;this.offset=null;this.options=r;e.waypoints[this.axis][this.id]=this;s[this.axis][this.id]=this;i=(o=t.data(w))!=null?o:[];i.push(this.id);t.data(w,i)}t.prototype.trigger=function(t){if(!this.enabled){return}if(this.callback!=null){this.callback.apply(this.element,t)}if(this.options.triggerOnce){return this.destroy()}};t.prototype.disable=function(){return this.enabled=false};t.prototype.enable=function(){this.context.refresh();return this.enabled=true};t.prototype.destroy=function(){delete s[this.axis][this.id];delete this.context.waypoints[this.axis][this.id];return this.context.checkEmpty()};t.getWaypointsByElement=function(t){var e,r;r=n(t).data(w);if(!r){return[]}e=n.extend({},s.horizontal,s.vertical);return n.map(r,function(t){return e[t]})};return t}();d={init:function(t,e){var r;if(e==null){e={}}if((r=e.handler)==null){e.handler=t}this.each(function(){var t,r,i,s;t=n(this);i=(s=e.context)!=null?s:n.fn[g].defaults.context;if(!n.isWindow(i)){i=t.closest(i)}i=n(i);r=a[i.data(u)];if(!r){r=new o(i)}return new l(t,r,e)});n[m]("refresh");return this},disable:function(){return d._invoke(this,"disable")},enable:function(){return d._invoke(this,"enable")},destroy:function(){return d._invoke(this,"destroy")},prev:function(t,e){return d._traverse.call(this,t,e,function(t,e,n){if(e>0){return t.push(n[e-1])}})},next:function(t,e){return d._traverse.call(this,t,e,function(t,e,n){if(e<n.length-1){return t.push(n[e+1])}})},_traverse:function(t,e,i){var o,l;if(t==null){t="vertical"}if(e==null){e=r}l=h.aggregate(e);o=[];this.each(function(){var e;e=n.inArray(this,l[t]);return i(o,e,l[t])});return this.pushStack(o)},_invoke:function(t,e){t.each(function(){var t;t=l.getWaypointsByElement(this);return n.each(t,function(t,n){n[e]();return true})});return this}};n.fn[g]=function(){var t,r;r=arguments[0],t=2<=arguments.length?e.call(arguments,1):[];if(d[r]){return d[r].apply(this,t)}else if(n.isFunction(r)){return d.init.apply(this,arguments)}else if(n.isPlainObject(r)){return d.init.apply(this,[null,r])}else if(!r){return n.error("jQuery Waypoints needs a callback function or handler option.")}else{return n.error("The "+r+" method does not exist in jQuery Waypoints.")}};n.fn[g].defaults={context:r,continuous:true,enabled:true,horizontal:false,offset:0,triggerOnce:false};h={refresh:function(){return n.each(a,function(t,e){return e.refresh()})},viewportHeight:function(){var t;return(t=r.innerHeight)!=null?t:i.height()},aggregate:function(t){var e,r,i;e=s;if(t){e=(i=a[n(t).data(u)])!=null?i.waypoints:void 0}if(!e){return[]}r={horizontal:[],vertical:[]};n.each(r,function(t,i){n.each(e[t],function(t,e){return i.push(e)});i.sort(function(t,e){return t.offset-e.offset});r[t]=n.map(i,function(t){return t.element});return r[t]=n.unique(r[t])});return r},above:function(t){if(t==null){t=r}return h._filter(t,"vertical",function(t,e){return e.offset<=t.oldScroll.y})},below:function(t){if(t==null){t=r}return h._filter(t,"vertical",function(t,e){return e.offset>t.oldScroll.y})},left:function(t){if(t==null){t=r}return h._filter(t,"horizontal",function(t,e){return e.offset<=t.oldScroll.x})},right:function(t){if(t==null){t=r}return h._filter(t,"horizontal",function(t,e){return e.offset>t.oldScroll.x})},enable:function(){return h._invoke("enable")},disable:function(){return h._invoke("disable")},destroy:function(){return h._invoke("destroy")},extendFn:function(t,e){return d[t]=e},_invoke:function(t){var e;e=n.extend({},s.vertical,s.horizontal);return n.each(e,function(e,n){n[t]();return true})},_filter:function(t,e,r){var i,o;i=a[n(t).data(u)];if(!i){return[]}o=[];n.each(i.waypoints[e],function(t,e){if(r(i,e)){return o.push(e)}});o.sort(function(t,e){return t.offset-e.offset});return n.map(o,function(t){return t.element})}};n[m]=function(){var t,n;n=arguments[0],t=2<=arguments.length?e.call(arguments,1):[];if(h[n]){return h[n].apply(null,t)}else{return h.aggregate.call(null,n)}};n[m].settings={resizeThrottle:100,scrollThrottle:30};return i.load(function(){return n[m]("refresh")})})}).call(this); -----
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