建筑人才网站哪个比较好,绍兴网站制作建设,运维培训机构哪个好,网站开发 超速云一、界面预览鼠标放到右边的Tab按钮上#xff0c;文字透明度降低#xff0c;同时一段文字高亮显示#xff0c;效果如下#xff1a;Demo地址#xff1a;http://5thirtyone.com/sandbox/samples/fadefocus/很绚丽的效果幺#xff01;二、实现原理将要高亮显示的文字加上文字透明度降低同时一段文字高亮显示效果如下 Demo地址http://5thirtyone.com/sandbox/samples/fadefocus/ 很绚丽的效果幺 二、实现原理 将要高亮显示的文字加上span段落标记 class”mask”的div 做为遮罩层使此遮罩层位于文字内容之上z-index属性使用Jquery给段落动态添加样式类。 三、HTML代码 div classwrapper ul classentity-results lia classd1 href#Summary/a/li lia classd2 href#Avatar/a/li lia classd3 href#Formats/a/li /ul div classcontent h2 Avatar (2009 film)/h2 div classentity-source img srcimages/avatar.jpg altAvatar poster / p Avatar, also known as James Camerons Avatar, is an American 3-D science fiction epic film written and directed by a hrefhttp://en.wikipedia.org/wiki/James_Cameron James Cameron/a, and was released on December 16, 2009 by 20th Century Fox. The film is co-produced by a hrefhttp://en.wikipedia.org/wiki/Lightstorm_Entertainment Lightstorm Entertainment/a, and span classd1focuses on an epic conflict on Pandora/span, an inhabited Earth-sized moon of Polyphemus, one of three fictional gas giants orbiting a hrefhttp://en.wikipedia.org/wiki/Alpha_Centauri_AAlpha Centauri A/a. On Pandora, human colonists and the sentient humanoid indigenous inhabitants of Pandora, the Navi, engage in a war over the planets resources and the latters continued existence. The films title refers to span classd2an avatar, a representation of a real person in a virtual world/span./p p span classd3The film was released in 2D and 3D formats/span, along with an IMAX 3D release in selected theaters. The film is being touted as a breakthrough in terms of filmmaking technology, for its development of 3D viewing and stereoscopic filmmaking with cameras that were specially designed for the films production./p p Read the rest of the a hrefhttp://en.wikipedia.org/wiki/Avatar_(2009_film)original Wikipedia page about Avatar/a/p div classmask /div /div /div /div entity-results类中显示了Tab按钮每个按钮控制左边文字的透明度段落文字的高亮显示。 entity-source类中有三个段落span Calss分别为d1 d2 d3也就是高亮文字段落。 class”mask”的空div放到最后此Div也就是一个遮罩层。 四、CSS关键代码 .entity-source, .entity-source span.show { position: relative; } .entity-source .mask { display: none; position: absolute; top: 0; left: 0; height: 100%; width: 100%; z-index: 1; } .entity-source span { z-index: 2; } .entity-source span.show { background: #ffc; color: #000; } 类mask中的z-index:1 使得div class”mask” 覆盖在左边文字内容之上。 z-nidex2又使得span段落覆盖在div class”mask”之上。从而显示实现了段落文字高亮显示。 五、Jquery代码 jQuery(document).ready(function($) { // mask source 控制mask的动画效果 var maskSource jQuery(.mask); jQuery(.entity-results).hover(function() { maskSource.animate({opacity:0.7},1).fadeIn(750); }, function() { maskSource.fadeOut(1000); }); // match hover 控制段落的高亮显示 var sample1 jQuery(span.d1); var sample2 jQuery(span.d2); var sample3 jQuery(span.d3); jQuery(a.d1).hover(function() { sample1.addClass(show);//给段落添加类 }, function() { sample1.removeClass(show); //移除段落类 }); jQuery(a.d2).hover(function() { sample2.addClass(show); }, function() { sample2.removeClass(show); }); jQuery(a.d3).hover(function() { sample3.addClass(show); }, function() { sample3.removeClass(show); }); }); 动画函数animate(params, [duration], [easing], [callback]) Params一组包含作为动画属性和终值的样式属性和及其值的集合 duration (可选)种预定速度之一的字符串(slow, normal, or fast)或表示动画时长的毫秒数值(如1000) easing (可选)要使用的擦除效果的名称(需要插件支持).默认jQuery提供linear 和 swing. callback (可选)在动画完成时执行的函数 淡入效果函数fadeIn(speed, [callback]) Speed三种预定速度之一的字符串(slow, normal, or fast)或表示动画时长的毫秒数值(如1000) callback(可选)(Optional) 在动画完成时执行的函数  淡出效果函数fadeOut解释同fadeIn