svg+css 或者js制作打钩的动画效果CSS Transition通过改变Height实现展开收起元素从QQtabBar看css命名规范BEM的详细介绍css实现两栏布局，左侧固定宽，右侧自适应的多种方法CSS 实现Chrome标签栏的技巧CSS实现两列布局的N种方法CSS实现隐藏搜索框功能(动画正反向序列)CSS3中Animation实现简单的手指点击动画的示例详解CSS中的特指度和层叠问题详解overflow:hidden的作用(溢出隐藏、清除浮动、解决外边距塌陷)关于CSS浮动与取消浮动的问题

完成
成功

 h2 { font-family: Helvetica; font-size: 30px; margin-top: 20px; color: #333; opacity: 0; } input[type="checkbox"]:checked+ label ~ h2 { animation: .6s title ease-in-out; animation-delay: 1.2s; animation-fill-mode: forwards; } .circle { stroke-dasharray: 1194; stroke-dashoffset: 1194; } input[type="checkbox"]:checked + label + svg .circle { animation: circle 1s ease-in-out; animation-fill-mode: forwards; } .tick { stroke-dasharray: 350; stroke-dashoffset: 350; } input[type="checkbox"]:checked + label+ svg .tick { animation: tick .8s ease-out; animation-fill-mode: forwards; animation-delay: .95s; } @keyframes circle { from { stroke-dashoffset: 1194; } to { stroke-dashoffset: 2388; } } @keyframes tick { from { stroke-dashoffset: 350; } to { stroke-dashoffset: 0; } } @keyframes title { from { opacity: 0; } to { opacity: 1; } } label { display: inline-block; height: 38px; width: 38px; line-height: 38px; padding: 0 18px; background-color: #1E9FFF; color: #fff; white-space: nowrap; text-align: center; font-size: 14px; border: none; border-radius: 2px; cursor: pointer; } #d1 { display: flex; justify-content: center; min-height: 100px; flex-direction: column; }

 $("#btn1").on("click",function () { if($(this).text()==="完成"){ $(".circle").css({'animation':'circle 1s ease-in-out','animation-fill-mode':'forwards'}); $(".tick").css({'animation':'tick .8s ease-out','animation-fill-mode':'forwards','animation-delay':'.95s'}); $("h2").css({'animation':'.6s title ease-in-out','animation-fill-mode':'forwards','animation-delay':'1.2s'}) $(this).text("取消") }else{ $(".circle").css({'animation':'none','animation-fill-mode':'none'}); $(".tick").css({'animation':'none','animation-fill-mode':'none'}); $("h2").css({'animation':'none','animation-fill-mode':'none'}) $(this).text("完成") } });