loading态-javascript--Mr.Ember

前言

动态加载数据时会出现页面空白，对于我们这种颜控肯定是不能接受的。所以本文用纯CSS方式封装了一个loading插件。

1. html代码

<div class="loading">
       <div class="loading-box">
            <span class="line1"></span>
            <span class="line2"></span>
            <span class="line3"></span>
            <span class="line4"></span>
            <span class="line5"></span>
            <span class="line6"></span>
            <span class="line7"></span>
            <span class="line8"></span>
            <p>数据加载中...</p>
       </div>
</div>

2. css实现

.loading {
    width: 900px;
    height: 500px;
    margin: 0 auto;
    padding: 200px;
}
.loading-box {
    width: 180px;
    height: 60px;
    margin: 0 auto;
    position: relative;
    
}
.loading span {
    width: 4px;
    height: 20px;
    background-color: #ccc;
    position: absolute;
    left: 38px;
    -webkit-animation: loading 1s infinite;
}

.loading .line1 {
    background-color: #8C93A0;
    -webkit-transform: rotate(0deg);
            transform: rotate(0deg);
    -webkit-animation-delay: .3s;
}
.loading .line2 {
    top: 5px;
    left: 52px;
    -webkit-transform: rotate(45deg);
            transform: rotate(45deg);
    -webkit-animation-delay: .4s;
}
.loading .line3 {
    top: 18px;
    left: 57px;
    -webkit-transform: rotate(90deg);
            transform: rotate(90deg);
    -webkit-animation-delay: .5s;
}
.loading .line4 {
    top: 31px;
    left: 52px;
    -webkit-transform: rotate(135deg);
            transform: rotate(135deg);
    -webkit-animation-delay: .6s;
}
.loading .line5 {
    top: 37px;
    -webkit-animation-delay: .7s;
}
.loading .line6 {
    top: 32px;
    left: 24px;
    -webkit-transform: rotate(-135deg);
            transform: rotate(-135deg);
    -webkit-animation-delay: .8s;
}
.loading .line7 {
    top: 18px;
    left: 19px;
    -webkit-transform: rotate(-90deg);
            transform: rotate(-90deg);
    -webkit-animation-delay: .9s;
}
.loading .line8 {
    top: 5px;
    left: 24px;
    -webkit-transform: rotate(-45deg);
            transform: rotate(-45deg);
    -webkit-animation-delay: 1s;
}
.loading p {
    padding-top: 70px;
    color: #8C93A0;
}
@-webkit-keyframes loading {
    0% {
        background-color: #ccc;
    }
    50% {
        background-color: #000;
    }
    100% {
        background-color: #ccc;
    }
}

3. js代码

define(function(require, exports) {

    var tmpStr =  '<div class="loading-box">' +
                        '<span class="line1"></span>' +
                        '<span class="line2"></span>' +
                        '<span class="line3"></span>' +
                        '<span class="line4"></span>' +
                        '<span class="line5"></span>' +
                        '<span class="line6"></span>' +
                        '<span class="line7"></span>' +
                        '<span class="line8"></span>' +
                        '<p>数据加载中...</p>' +
                    '</div>';
        
    
    // 渲染页面
    $(".loading").append(tmpStr);


    // 改变状态显示loading
    var start = function(targetClassName) {
        $(".loading").show();
        $("" + targetClassName).hide();
    }

    //显示要渲染的目标数据
    var end = function(targetClassName) {
        $(".loading").hide();
        $("" + targetClassName).show();
    }


    exports.start = start;
    exports.end = end;
});

上面使用了默认模板，在页面中不用把所有的HTML都写入了。只需在HTML中写如下代码即可：

<!-- 加载中 load-->
<div class="loading"></div>

 

 

最终效果如下：