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t=this;t.optUp.loadFull.use&&!t.optUp.isLock&&t.optUp.hasNext&&t.optUp.callback&&t.getScrollHeight()<=t.getClientHeight()&&setTimeout((function(){t.getScrollHeight()<=t.getClientHeight()&&t.triggerUpScroll()}),t.optUp.loadFull.delay)},t.prototype.lockUpScroll=function(t){null==t&&(t=!0),this.optUp.isLock=t},t.prototype.showEmpty=function(){var t=this,o=t.optUp.empty,e=o.warpId||t.optUp.clearEmptyId;if(null!=e){var n=t.getDomById(e);if(n){t.removeEmpty();var i="";if(o.icon&&(i+='<img class="empty-icon" src="'+o.icon+'"/>'),o.tip&&(i+='<p class="empty-tip">'+o.tip+"</p>"),o.btntext&&(i+='<p class="empty-btn">'+o.btntext+"</p>"),t.emptyDom=document.createElement("div"),t.emptyDom.className="mescroll-empty",t.emptyDom.innerHTML=i,n.appendChild(t.emptyDom),o.btnClick){var r=t.emptyDom.getElementsByClassName("empty-btn")[0];o.supportTap?r.addEventListener("tap",(function(e){e.stopPropagation(),t.preventDefault(e),o.btnClick()})):r.onclick=function(){o.btnClick()}}}}},t.prototype.removeEmpty=function(){this.removeChild(this.emptyDom)},t.prototype.showTopBtn=function(t){if(!this.topBtnShow){this.topBtnShow=!0;var o,e=this,n=e.optUp.toTop;if(null==e.toTopBtn)n.html?(e.toTopBtn=document.createElement("div"),e.toTopBtn.innerHTML=n.html):(e.toTopBtn=document.createElement("img"),e.toTopBtn.src=n.src),e.toTopBtn.className=n.warpClass,n.supportTap?e.toTopBtn.addEventListener("tap",(function(t){t.stopPropagation(),e.preventDefault(t);var o=n.btnClick&&n.btnClick();!0!==o&&e.scrollTo(0,e.optUp.toTop.duration)})):e.toTopBtn.onclick=function(){var t=n.btnClick&&n.btnClick();!0!==t&&e.scrollTo(0,e.optUp.toTop.duration)},n.warpId&&(o=e.getDomById(n.warpId)),o||(o=document.body),o.appendChild(e.toTopBtn);e.toTopBtn.classList.remove(n.hideClass),e.toTopBtn.classList.add(n.showClass),e.setTopBtnFadeDuration(t)}},t.prototype.hideTopBtn=function(t){this.topBtnShow&&this.toTopBtn&&(this.topBtnShow=!1,this.toTopBtn.classList.remove(this.optUp.toTop.showClass),this.toTopBtn.classList.add(this.optUp.toTop.hideClass),this.setTopBtnFadeDuration(t))},t.prototype.setTopBtnFadeDuration=function(t){if(this.toTopBtn){var o=(null!=t?t:this.optUp.toTop.fadeDuration)+"s";this.toTopBtn.style.animationDuration=o,this.toTopBtn.style.webkitAnimationDuration=o}},t.prototype.scrollTo=function(t,o){var e=this,n=e.getScrollTop(),i=t;if(i>0){var r=e.getScrollHeight()-e.getClientHeight();i>r&&(i=r)}else i=0;e.isScrollTo=!0,e.scrollDom.style.webkitOverflowScrolling="auto",e.getStep(n,i,(function(t){e.setScrollTop(t),t===i&&(e.scrollDom.style.webkitOverflowScrolling="touch",e.isScrollTo=!1)}),o)},t.prototype.getStep=function(t,o,e,n,i){var r=o-t;if(0!==n&&0!==r){n=n||300,i=i||30;var s=n/i,l=r/s,a=0,p=window.setInterval((function(){a<s-1?(t+=l,e&&e(t,p),a++):(e&&e(o,p),window.clearInterval(p))}),i)}else e&&e(o)},t.prototype.lazyLoad=function(t){var o=this,e=null!=t?t:o.optUp.lazyLoad.delay,n=setTimeout((function(){for(var t=o.scrollDom.querySelectorAll("["+o.optUp.lazyLoad.attr+"]"),e=t.length,n=0;n<e;n++){var i=t[n];if("true"!==i.getAttribute(o.lazyTag)&&o.isInSee(i,o.optUp.lazyLoad.offset)){var r=i.getAttribute(o.optUp.lazyLoad.attr),s=new Image;s.onload=function(){var t=this.src,e=this.dom,n=o.optUp.lazyLoad.showClass;n&&e.classList.add(n),"IMG"===e.tagName?e.src=t:e.style.backgroundImage="url("+t+")",e.removeAttribute(o.optUp.lazyLoad.attr),e.removeAttribute(o.lazyTag)},s.onerror=function(){this.dom.removeAttribute(o.lazyTag)},s.onabort=function(){this.dom.removeAttribute(o.lazyTag)},s.src=r,i.setAttribute(o.lazyTag,"true"),s.dom=i}}}),e);return n},t.prototype.isInSee=function(t,o){o=o||0;var e=this.getOffsetTop(t),n=this.getScrollTop()-o,i=e+t.offsetHeight,r=n+o+this.getClientHeight()+o;return e<r&&e>=n||i<=r&&i>n},t.prototype.getOffsetTop=function(t){var o=t.offsetTop,e=t.offsetParent;while(null!=e&&e!==this.scrollDom)o+=e.offsetTop+e.clientTop,e=e.offsetParent;return o},t.prototype.getScrollHeight=function(){return this.scrollDom.scrollHeight},t.prototype.getClientHeight=function(){return this.isScrollBody&&"CSS1Compat"===document.compatMode?document.documentElement.clientHeight:this.scrollDom.clientHeight},t.prototype.getBodyHeight=function(){return document.body.clientHeight||document.documentElement.clientHeight},t.prototype.getScrollTop=function(){return this.isScrollBody?document.documentElement.scrollTop||document.body.scrollTop:this.scrollDom.scrollTop},t.prototype.getToBottom=function(){return this.getScrollHeight()-this.getClientHeight()-this.getScrollTop()},t.prototype.setScrollTop=function(t){"number"===typeof t&&(this.isScrollBody?(document.documentElement.scrollTop=t,document.body.scrollTop=t):this.scrollDom.scrollTop=t)},t.prototype.getDomById=function(t){var o;return t&&("string"===typeof t?o=document.getElementById(t):t.nodeType&&(o=t)),o||console.error('the element with id as "'+t+'" can not be found: document.getElementById("'+t+'")==null'),o},t.prototype.removeChild=function(t){if(t){var o=t.parentNode;o&&o.removeChild(t),t=null}},t.prototype.destroy=function(){var t=this;t.scrollDom.removeEventListener("touchstart",t.touchstartEvent),t.scrollDom.removeEventListener("touchmove",t.touchmoveEvent),t.scrollDom.removeEventListener("touchend",t.touchendEvent),t.scrollDom.removeEventListener("touchcancel",t.touchendEvent),t.scrollDom.removeEventListener("mousedown",t.touchstartEvent),t.scrollDom.removeEventListener("mousemove",t.touchmoveEvent),t.scrollDom.removeEventListener("mouseup",t.touchendEvent),t.scrollDom.removeEventListener("mouseleave",t.touchendEvent),t.removeChild(t.downwarp),t.isScrollBody?window.removeEventListener("scroll",t.scrollEvent):t.scrollDom.removeEventListener("scroll",t.scrollEvent),t.removeChild(t.upwarp),t.removeChild(t.toTopBtn),t.setBounce(!0)},t}))}}]);
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