js实现ajax加载过程中Loading效果

首先第一步：

    编写一个Loading样式页面，这个页面可以自己写也可以去喜欢的样式网站下载写好点的样式，推荐（http://cssload.net/  ）

css样式代码：

#fountainG{
position:relative;
margin:10% auto;
width:240px;
height:29px}

.fountainG{
position:absolute;
top:0;
background-color:#33cc99;
width:29px;
height:29px;
-webkit-animation:bounce_fountainG 1.3s infinite normal;
-moz-animation:bounce_fountainG 1.3s infinite normal;
-o-animation:bounce_fountainG 1.3s infinite normal;
-ms-animation:bounce_fountainG 1.3s infinite normal;
animation:bounce_fountainG 1.3s infinite normal;
-moz-transform:scale(.3);
-webkit-transform:scale(.3);
-ms-transform:scale(.3);
-o-transform:scale(.3);
transform:scale(.3);
border-radius:19px;
}

#fountainG_1{
left:0;
-moz-animation-delay:0.52s;
-webkit-animation-delay:0.52s;
-ms-animation-delay:0.52s;
-o-animation-delay:0.52s;
animation-delay:0.52s;
}

#fountainG_2{
left:30px;
-moz-animation-delay:0.65s;
-webkit-animation-delay:0.65s;
-ms-animation-delay:0.65s;
-o-animation-delay:0.65s;
animation-delay:0.65s;
}

#fountainG_3{
left:60px;
-moz-animation-delay:0.78s;
-webkit-animation-delay:0.78s;
-ms-animation-delay:0.78s;
-o-animation-delay:0.78s;
animation-delay:0.78s;
}

#fountainG_4{
left:90px;
-moz-animation-delay:0.91s;
-webkit-animation-delay:0.91s;
-ms-animation-delay:0.91s;
-o-animation-delay:0.91s;
animation-delay:0.91s;
}

#fountainG_5{
left:120px;
-moz-animation-delay:1.04s;
-webkit-animation-delay:1.04s;
-ms-animation-delay:1.04s;
-o-animation-delay:1.04s;
animation-delay:1.04s;
}

#fountainG_6{
left:150px;
-moz-animation-delay:1.17s;
-webkit-animation-delay:1.17s;
-ms-animation-delay:1.17s;
-o-animation-delay:1.17s;
animation-delay:1.17s;
}

#fountainG_7{
left:180px;
-moz-animation-delay:1.3s;
-webkit-animation-delay:1.3s;
-ms-animation-delay:1.3s;
-o-animation-delay:1.3s;
animation-delay:1.3s;
}

#fountainG_8{
left:210px;
-moz-animation-delay:1.43s;
-webkit-animation-delay:1.43s;
-ms-animation-delay:1.43s;
-o-animation-delay:1.43s;
animation-delay:1.43s;
}

@-moz-keyframes bounce_fountainG{
0%{
-moz-transform:scale(1);
background-color:#33cc99;
}

100%{
-moz-transform:scale(.3);
background-color:#0099cc;
}

}

@-webkit-keyframes bounce_fountainG{
0%{
-webkit-transform:scale(1);
background-color:#33cc99;
}

100%{
-webkit-transform:scale(.3);
background-color:#0099cc;
}

}

@-ms-keyframes bounce_fountainG{
0%{
-ms-transform:scale(1);
background-color:#33cc99;
}

100%{
-ms-transform:scale(.3);
background-color:#0099cc;
}

}

@-o-keyframes bounce_fountainG{
0%{
-o-transform:scale(1);
background-color:#33cc99;
}

100%{
-o-transform:scale(.3);
background-color:#0099cc;
}

}

@keyframes bounce_fountainG{
0%{
transform:scale(1);
background-color:#33cc99;
}

100%{
transform:scale(.3);
background-color:#0099cc;
}

}

html代码

<div id="fountainG">
                    <div id="fountainG_1" class="fountainG">
                    </div>
                    <div id="fountainG_2" class="fountainG">
                    </div>
                    <div id="fountainG_3" class="fountainG">
                    </div>
                    <div id="fountainG_4" class="fountainG">
                    </div>
                    <div id="fountainG_5" class="fountainG">
                    </div>
                    <div id="fountainG_6" class="fountainG">
                    </div>
                    <div id="fountainG_7" class="fountainG">
                    </div>
                    <div id="fountainG_8" class="fountainG">
                    </div>
</div>

写完之后需要写一个js触发事件：

function loadingEffect() {
    var loading = $('#fountainG');
    loading.hide();
    $(document).ajaxStart(function () {
        loading.show();
    }).ajaxStop(function () {
        loading.hide();
    });
}
loadingEffect();