// 使用Transform的属性，组合translate（位移）和rotate（旋转），将生成的小矩形组合成各种箭头样式；
HTML
1 <section class="main"> 2<header class="title">图标变形过渡效果缩放式菜单</header> 3<section> 4 <button>图标</button> 5 <header> 6 #300x100 淡色系 7 </header> 8 <div> 9 <article>10 <img src="/gb/laitu/300x100" alt="" />11 </article>12 </div>13</section>14<section>15 <button>图标</button>16 <header>17 #300x100 暗色系18 </header>19 <div>20 <article>21 <img src="/gb/laitu/300x100/666666/ffffff" alt="" />22 </article>23 </div>24</section>25 </section>
CSS
1 * {box-sizing:border-box;} 2 body {font-family: 'microsoft yahei',Arial,sans-serif; background: #aaa;} 3 section {position: relative; width:100%;} 4 section.main {position: absolute; top:10%; left:25%; width:50%; max-width:30em; min-width:15em; border-radius:5px; overflow: hidden;} 5 section.main > header {background: orange; color:#fff; line-height: 1.2em; text-align: center;} 6 section section:last-child {border:none;} 7 section > div {height:0; overflow: hidden; transition:all .4s ease-in-out;} 8 article,header {padding:1em; line-height: 1em;} 9 header:not(.title) {width:100%; overflow: hidden; height:3em; background: #efefef; cursor:pointer; color:#888; white-space:nowrap; text-overflow: ellipsis; padding-right: 2.1em;}10 header:not(.title):hover {background: #e8e8e8;}11 article {line-height: 1.4em; background: rgba(255, 255, 255, .7);}12 article img {width:100%; height:auto; border:2px solid white; border-radius: 3px;}13 14 /* 使用CSS3的伪选择器,生成关闭和向下两个图标按钮; */15 /* 使用变形属性,组合位移和旋转,可将生成的小矩形组合成向下按钮,同样也可以组装成关闭按钮; */16 section button {position: absolute; right:0; margin:0; padding:0; height:3em; width:3em; outline:none; border:0; background: none; text-indent: -9999px; pointer-events:none; cursor:pointer;}17 section button:before,18 section button:after {content:''; display: block; position: absolute; width:4px; height:12px; background: orange; border-radius: .3em; top:50%; left:50%; transition:all .3s ease-in-out;}19 20 /*向左箭头*/21 /*section button:before { transform:translate(0%, -50%) rotate(45deg);}22 section button:after { transform:translate(0%, 0%) rotate(-45deg);}*/23 24 /*向右箭头*/25 /*section button:before { transform:translate(0%, -50%) rotate(-45deg);}26 section button:after { transform:translate(0%, 0%) rotate(45deg);}*/27 28 /*向上箭头*/29 /*section button:before { transform:translate(75%, -20%) rotate(-45deg);} 30 section button:after { transform:translate(-75%, -20%) rotate(45deg);}*/31 32 /*向下箭头*/33 section button:before {transform:translate(75%, 0%) rotate(45deg);} 34 section button:after {transform:translate(-75%, 0%) rotate(-45deg);}35 36 37 /* 点击之后需要变成"X"; */38 section.open button:after,section.open button:before {background: red; height:14px; }39 section.open button:before {transform:translate(-75%, -20%) rotate(45deg);}40 section.open button:after {transform:translate(-75%, -20%) rotate(-45deg);}
JavaScript
1 $(function(){ 2$('section section header').on('click', function () { 3 var $this = $(this), 4 parent_section = $this.parent(), 5 closeDiv = $this.siblings('div'), 6 contentheight = closeDiv.children('article').outerHeight(); 7 (closeDiv.height() === 0 ) ? closeDiv.height(contentheight) : closeDiv.height(0); 8 // 更改容器高度; 9 $this.parents('section').first().toggleClass('open');10 // 更改箭头样式;11});12 });
