CSS3实现10种Loading效果

昨晚用CSS3实现了几种常见的Loading效果，虽然很简单，但还是分享一下，顺便也当是做做笔记……

第1种效果：

代码如下：

<div class="loading"><span></span><span></span><span></span><span></span><span></span></div>

.loading{width: 80px;height: 40px;margin: 0 auto;margin-top:100px;
        }.loading span{display: inline-block;width: 8px;height: 100%;border-radius: 4px;background: lightgreen;-webkit-animation: load 1s ease infinite;
        }@-webkit-keyframes load{0%,100%{
                height: 40px;background: lightgreen;
            }50%{height: 70px;margin: -15px 0;background: lightblue;
            }}
        .loading span:nth-child(2){-webkit-animation-delay:0.2s;
        }.loading span:nth-child(3){-webkit-animation-delay:0.4s;
        }.loading span:nth-child(4){-webkit-animation-delay:0.6s;
        }.loading span:nth-child(5){-webkit-animation-delay:0.8s;
        }

第2种效果：

代码如下：

<div class="loading"><span></span></div>

.loading{width: 150px;height: 4px;border-radius: 2px;margin: 0 auto;margin-top:100px;position: relative;background: lightgreen;-webkit-animation: changeBgColor 1.04s ease-in infinite alternate;
        }.loading span{display: inline-block;width: 16px;height: 16px;border-radius: 50%;background: lightgreen;position: absolute;margin-top: -7px;margin-left:-8px;-webkit-animation: changePosition 1.04s ease-in infinite alternate;
        }@-webkit-keyframes changeBgColor{0%{
                background: lightgreen;
            }100%{background: lightblue;
            }}
        @-webkit-keyframes changePosition{0%{
                background: lightgreen;
            }100%{margin-left: 142px;background: lightblue;
            }}

第3-5种效果：

代码如下：

<div class="loading"><span></span><span></span><span></span><span></span><span></span></div>

第3-5种效果的css样式分别为：

.loading{width: 150px;height: 15px;margin: 0 auto;margin-top:100px;
        }.loading span{display: inline-block;width: 15px;height: 100%;margin-right: 5px;border-radius: 50%;background: lightgreen;-webkit-animation: load 1.04s ease infinite;
        }.loading span:last-child{margin-right: 0px; 
        }@-webkit-keyframes load{0%{
                opacity: 1;
            }100%{opacity: 0;
            }}
        .loading span:nth-child(1){-webkit-animation-delay:0.13s;
        }.loading span:nth-child(2){-webkit-animation-delay:0.26s;
        }.loading span:nth-child(3){-webkit-animation-delay:0.39s;
        }.loading span:nth-child(4){-webkit-animation-delay:0.52s;
        }.loading span:nth-child(5){-webkit-animation-delay:0.65s;
        }

.loading{width: 150px;height: 15px;margin: 0 auto;margin-top:100px;
        }.loading span{display: inline-block;width: 15px;height: 100%;margin-right: 5px;border-radius: 50%;background: lightgreen;-webkit-animation: load 1.04s ease infinite;
        }.loading span:last-child{margin-right: 0px; 
        }@-webkit-keyframes load{0%{
                opacity: 1;-webkit-transform: scale(1.3);
            }100%{opacity: 0.2;-webkit-transform: scale(.3);
            }}
        .loading span:nth-child(1){-webkit-animation-delay:0.13s;
        }.loading span:nth-child(2){-webkit-animation-delay:0.26s;
        }.loading span:nth-child(3){-webkit-animation-delay:0.39s;
        }.loading span:nth-child(4){-webkit-animation-delay:0.52s;
        }.loading span:nth-child(5){-webkit-animation-delay:0.65s;
        }

.loading{width: 150px;height: 15px;margin: 0 auto;position: relative;margin-top:100px;
        }.loading span{position: absolute;width: 15px;height: 100%;border-radius: 50%;background: lightgreen;-webkit-animation: load 1.04s ease-in infinite alternate;
        }@-webkit-keyframes load{0%{
                opacity: 1;-webkit-transform: translate(0px);
            }100%{opacity: 0.2;-webkit-transform: translate(150px);
            }}
        .loading span:nth-child(1){-webkit-animation-delay:0.13s;
        }.loading span:nth-child(2){-webkit-animation-delay:0.26s;
        }.loading span:nth-child(3){-webkit-animation-delay:0.39s;
        }.loading span:nth-child(4){-webkit-animation-delay:0.52s;
        }.loading span:nth-child(5){-webkit-animation-delay:0.65s;
        }

第6-8种效果：

代码如下：

<div class="loading"><span></span><span></span><span></span><span></span><span></span></div>

第6-8种效果的css样式分别为：

.loading{width: 150px;height: 15px;margin: 0 auto;margin-top:100px;text-align: center;
        }.loading span{display: inline-block;width: 15px;height: 100%;margin-right: 5px;background: lightgreen;-webkit-animation: load 1.04s ease infinite;
        }.loading span:last-child{margin-right: 0px; 
        }@-webkit-keyframes load{0%{
                opacity: 1;
            }100%{opacity: 0;
            }}
        .loading span:nth-child(1){-webkit-animation-delay:0.13s;
        }.loading span:nth-child(2){-webkit-animation-delay:0.26s;
        }.loading span:nth-child(3){-webkit-animation-delay:0.39s;
        }.loading span:nth-child(4){-webkit-animation-delay:0.52s;
        }.loading span:nth-child(5){-webkit-animation-delay:0.65s;
        }

.loading{width: 150px;height: 15px;margin: 0 auto;margin-top:100px;
        }.loading span{display: inline-block;width: 15px;height: 100%;margin-right: 5px;background: lightgreen;-webkit-transform-origin: right bottom;-webkit-animation: load 1s ease infinite;
        }.loading span:last-child{margin-right: 0px; 
        }@-webkit-keyframes load{0%{
                opacity: 1;
            }100%{opacity: 0;-webkit-transform: rotate(90deg);
            }}
        .loading span:nth-child(1){-webkit-animation-delay:0.13s;
        }.loading span:nth-child(2){-webkit-animation-delay:0.26s;
        }.loading span:nth-child(3){-webkit-animation-delay:0.39s;
        }.loading span:nth-child(4){-webkit-animation-delay:0.52s;
        }.loading span:nth-child(5){-webkit-animation-delay:0.65s;
        }

.loading{width: 150px;height: 15px;margin: 0 auto;margin-top:100px;
        }.loading span{display: inline-block;width: 15px;height: 100%;margin-right: 5px;background: lightgreen;-webkit-transform-origin: right bottom;-webkit-animation: load 1s ease infinite;
        }.loading span:last-child{margin-right: 0px; 
        }@-webkit-keyframes load{0%{
                opacity: 1;-webkit-transform: scale(1);
            }100%{opacity: 0;-webkit-transform: rotate(90deg) scale(.3);
            }}
        .loading span:nth-child(1){-webkit-animation-delay:0.13s;
        }.loading span:nth-child(2){-webkit-animation-delay:0.26s;
        }.loading span:nth-child(3){-webkit-animation-delay:0.39s;
        }.loading span:nth-child(4){-webkit-animation-delay:0.52s;
        }.loading span:nth-child(5){-webkit-animation-delay:0.65s;
        }

第9-10种效果：

代码如下：

<div class="loadEffect"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></div>

CSS样式分别为：

.loadEffect{width: 100px;height: 100px;position: relative;margin: 0 auto;margin-top:100px;
        }.loadEffect span{display: inline-block;width: 16px;height: 16px;border-radius: 50%;background: lightgreen;position: absolute;-webkit-animation: load 1.04s ease infinite;
        }@-webkit-keyframes load{0%{
                opacity: 1;
            }100%{opacity: 0.2;
            }}
        .loadEffect span:nth-child(1){left: 0;top: 50%;margin-top:-8px;-webkit-animation-delay:0.13s;
        }.loadEffect span:nth-child(2){left: 14px;top: 14px;-webkit-animation-delay:0.26s;
        }.loadEffect span:nth-child(3){left: 50%;top: 0;margin-left: -8px;-webkit-animation-delay:0.39s;
        }.loadEffect span:nth-child(4){top: 14px;right:14px;-webkit-animation-delay:0.52s;
        }.loadEffect span:nth-child(5){right: 0;top: 50%;margin-top:-8px;-webkit-animation-delay:0.65s;
        }.loadEffect span:nth-child(6){right: 14px;bottom:14px;-webkit-animation-delay:0.78s;
        }.loadEffect span:nth-child(7){bottom: 0;left: 50%;margin-left: -8px;-webkit-animation-delay:0.91s;
        }.loadEffect span:nth-child(8){bottom: 14px;left: 14px;-webkit-animation-delay:1.04s;
        }

.loadEffect{width: 100px;height: 100px;position: relative;margin: 0 auto;margin-top:100px;
        }.loadEffect span{display: inline-block;width: 20px;height: 20px;border-radius: 50%;background: lightgreen;position: absolute;-webkit-animation: load 1.04s ease infinite;
        }@-webkit-keyframes load{0%{
                -webkit-transform: scale(1.2);opacity: 1;
            }100%{-webkit-transform: scale(.3);opacity: 0.5;
            }}
        .loadEffect span:nth-child(1){left: 0;top: 50%;margin-top:-10px;-webkit-animation-delay:0.13s;
        }.loadEffect span:nth-child(2){left: 14px;top: 14px;-webkit-animation-delay:0.26s;
        }.loadEffect span:nth-child(3){left: 50%;top: 0;margin-left: -10px;-webkit-animation-delay:0.39s;
        }.loadEffect span:nth-child(4){top: 14px;right:14px;-webkit-animation-delay:0.52s;
        }.loadEffect span:nth-child(5){right: 0;top: 50%;margin-top:-10px;-webkit-animation-delay:0.65s;
        }.loadEffect span:nth-child(6){right: 14px;bottom:14px;-webkit-animation-delay:0.78s;
        }.loadEffect span:nth-child(7){bottom: 0;left: 50%;margin-left: -10px;-webkit-animation-delay:0.91s;
        }.loadEffect span:nth-child(8){bottom: 14px;left: 14px;-webkit-animation-delay:1.04s;
        }

PS：CSS样式代码其实很多重复，主要就是动画不一样，但为了方便以后直接拿来用，就先不整理了。

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