2013年職稱英語考試?yán)砉ゎ怌級真題答案、答案解析、考友交流!
* $("#to-right").float({position:"rm"}); //右中位置浮動 */ jQuery.fn.float= function(settings){ if(typeof settings == "object"){ settings = jQuery.extend({ //延遲 delay : 1000, //位置偏移 offset : { left : 0, right : 0, top : 0, bottom : 0 }, style : null, //樣式 width:212, //寬度 height:314, //高度 position:"rm" //位置 }, settings || {}); var winW = $(window).width(); var winH = $(window).height(); //根據(jù)參數(shù)獲取位置數(shù)值 function getPosition($applyTo,position){ var _pos = null; switch(position){ case "rm" : $applyTo.data("offset","right"); $applyTo.data("offsetPostion",settings.offset.right); _pos = {right:settings.offset.right,top:winH/2-$applyTo.innerHeight()/2}; break; case "lm" : $applyTo.data("offset","left"); $applyTo.data("offsetPostion",settings.offset.left); _pos = {left:settings.offset.left,top:winH/2-$applyTo.innerHeight()/2}; break; case "rb" : _pos = {right:settings.offset.right,top:winH - $applyTo.innerHeight()}; break; case "lb" : _pos = {left:settings.offset.left,top:winH - $applyTo.innerHeight()}; break; case "l" : _pos = {left:settings.offset.left,top:settings.offset.top}; break; case "r" : _pos = {right:settings.offset.right,top:settings.offset.top}; break; case "t" : $applyTo.data("offset","top"); $applyTo.data("offsetPostion",settings.offset.top); _pos = {left:settings.offset.left,top:settings.offset.top}; break; case "b" : $applyTo.data("offset","bottom"); $applyTo.data("offsetPostion",settings.offset.bottom); _pos = {left:settings.offset.left,top:winH - $applyTo.innerHeight()}; break; } return _pos; } //設(shè)置容器位置 function setPosition($applyTo,position,isUseAnimate){ var scrollTop = $(window).scrollTop(); var scrollLeft = $(window).scrollLeft(); var _pos = getPosition($applyTo,position); _pos.top += scrollTop; isUseAnimate && $applyTo.stop().animate(_pos,settings.delay) || $applyTo.css(_pos); } return this.each(function(){ var $this = $(this); $this.css("position","absolute"); settings.style && $this.css(settings.style); setPosition($this,settings.position); $(this).data("isAllowScroll",true); $(window).scroll(function(){ $this.data("isAllowScroll") && setPosition($this,settings.position,true); }); }) }else{ var speed = arguments.length > 1 && arguments[1] || "fast"; this.each(function(){ if(settings == "clearOffset"){ var _c = {}; if($(this).data("offset")){ _c[$(this).data("offset")] = 0; $(this).data("isAllowScroll",false); $(this).stop().animate(_c,speed); } }else if(settings == "addOffset"){ var _c = {}; if($(this).data("offset") && $(this).data("offsetPostion")){ _c[$(this).data("offset")] = $(this).data("offsetPostion"); $(this).stop().animate(_c,speed); $(this).data("isAllowScroll",true); } }else if(settings == "setScrollDisable"){ $(this).data("isAllowScroll",false); }else if(settings == "setScrollUsable"){ $(this).data("isAllowScroll",true); } }) } } $(function(){ $(".float_box").float({ delay : 0,//延遲 position:"b" //位置 }); });