jquery.onscreen.min.js

(function(e){e.fn.onScreen=function(t){var n=e.extend({container:window,direction:"vertical",toggleClass:null,doIn:null,doOut:null,tolerance:0,throttle:null,lazyAttr:null,lazyPlaceholder:"data:image/gif;base64,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",debug:false},t);return this.each(function(){function m(){if(v){return p<f-n.tolerance&&r<p+c-n.tolerance}else{return p<u-n.tolerance&&p>-c+n.tolerance}}function g(){if(v){return p+(c-n.tolerance)<r||p>f-n.tolerance}else{return p>u-n.tolerance||-c+n.tolerance>p}}function y(){if(v){return d<l-n.tolerance&&i<d+h-n.tolerance}else{return d<a-n.tolerance&&d>-h+n.tolerance}}function b(){if(v){return d+(h-n.tolerance)<i||d>l-n.tolerance}else{return d>a-n.tolerance||-h+n.tolerance>d}}function w(){if(t){return false}if(n.direction==="horizontal"){return y()}else{return m()}}function E(){if(!t){return false}if(n.direction==="horizontal"){return b()}else{return g()}}function S(e,t,n){var r,i,s;return function(){i=arguments;s=true;n=n||this;if(!r){(function(){if(s){e.apply(n,i);s=false;r=setTimeout(arguments.callee,t)}else{r=null}})()}}}var t=false;var r;var i;var s=e(this);var o;var u;var a;var f;var l;var c;var h;var p;var d;var v=e.isWindow(n.container);var x=function(){if(!v&&e(n.container).css("position")==="static"){e(n.container).css("position","relative")}o=e(n.container);u=o.height();a=o.width();f=o.scrollTop()+u;l=o.scrollLeft()+a;c=s.outerHeight(true);h=s.outerWidth(true);if(v){var m=s.offset();p=m.top;d=m.left}else{var g=s.position();p=g.top;d=g.left}r=o.scrollTop();i=o.scrollLeft();if(n.debug){console.log("Container: "+n.container+"\n"+"Width: "+u+"\n"+"Height: "+a+"\n"+"Bottom: "+f+"\n"+"Right: "+l);console.log("Matched element: "+(s.attr("class")!==undefined?s.prop("tagName").toLowerCase()+"."+s.attr("class"):s.prop("tagName").toLowerCase())+"\n"+"Left: "+d+"\n"+"Top: "+p+"\n"+"Width: "+h+"\n"+"Height: "+c)}if(w()){if(n.toggleClass){s.addClass(n.toggleClass)}if(e.isFunction(n.doIn)){n.doIn.call(s[0])}if(n.lazyAttr&&s.prop("tagName")==="IMG"){var y=s.attr(n.lazyAttr);s.css({background:"url("+n.lazyPlaceholder+") 50% 50% no-repeat",minHeight:"5px",minWidth:"16px"});s.prop("src",y)}t=true}else if(E()){if(n.toggleClass){s.removeClass(n.toggleClass)}if(e.isFunction(n.doOut)){n.doOut.call(s[0])}t=false}};if(window.location.hash){S(x,50)}else{x()}if(n.throttle){x=S(x,n.throttle)}e(n.container).on("scroll resize",x);if(typeof module==="object"&&module&&typeof module.exports==="object"){module.exports=jQuery}else{if(typeof define==="function"&&define.amd){define("jquery-onscreen",[],function(){return jQuery})}}})}})(jQuery)