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js ajax加載時的進度條代碼

 更新時間：2015年10月15日 09:14:36   投稿：mrr  
在web頁面中使用ajax加載進度條，可以讓用戶預先判斷等待的時間，而且還可以減少用戶等待信息加載過程中的心理焦慮感，所以進度條加載必不可少，下面小編給大家介紹ajax加載進度條代碼是如何實現(xiàn)的

最終效果如下圖所示，pc和移動端都可以展示的，調用方法也很簡單，開始調用：loading.baosight.showPageLoadingMsg(false),alse代表不現(xiàn)實加載說明,true展示加載說明.調用完成后調用:loading.baosight.hidePageLoadingMsg(),在整個代碼里有兩個文件，一個是js文件，一個是css文件。切記不要忘記引入jquery.js

css文件

#_loadMsg{
 display: inline-block;
 width: 100%;
 text-align: center;
 line-height: 45;
 padding-left: 20px;
 display : none;
}

#_loading_div {
 vertical-align: middle;
 display: inline-block;
 width: 100%;
 height: 100%;
 margin: 0 auto;
 text-align: center;
 position: absolute;
 z-index: 3;
 line-height: 40;
 opacity: 0.5;
 display : none;
 background: #CCCCCC;
}

#_loading_div span {
 display: inline-block;
 width: 10px;
 height: 40px;
 animation-name: scale;
 -webkit-animation-name: scale;
 -moz-animation-name: scale;
 -ms-animation-name: scale;
 -o-animation-name: scale;
 animation-duration: 1.2s;
 -webkit-animation-duration: 1.2s;
 -moz-animation-duration: 1.2s;
 -ms-animation-duration: 1.2s;
 -o-animation-duration: 1.2s;
 animation-iteration-count: infinite;
 -webkit-animation-iteration-count: infinite;
 -moz-animation-iteration-count: infinite;
 -ms-animation-iteration-count: infinite;
 -o-animation-iteration-count: infinite;
}
span.item-1 {
 background: #2ecc71;
}
span.item-2 {
 background: #3498db;
}
span.item-3 {
 background: #9b59b6;
}
span.item-4 {
 background: #e67e22;
}
span.item-5 {
 background: #c0392b;
}
span.item-6 {
 background: #e74c3c;
}
span.item-7 {
 background: #e74c8c;
}

.item-1 {
 animation-delay: -1s;
 -webkit-animation-delay: -1s;
 -moz-animation-delay: -1s;
 -ms-animation-delay: -1s;
 -o-animation-delay: -1s;
}

.item-2 {
 animation-delay: -0.9s;
 -webkit-animation-delay: -0.9s;
 -moz-animation-delay: -0.9s;
 -ms-animation-delay: -0.9s;
 -o-animation-delay: -0.9s;
}

.item-3 {
 animation-delay: -0.8s;
 -webkit-animation-delay: -0.8s;
 -moz-animation-delay: -0.8s;
 -ms-animation-delay: -0.8s;
 -o-animation-delay: -0.8s;
}

.item-4 {
 animation-delay: -0.7s;
 -webkit-animation-delay: -0.7s;
 -moz-animation-delay: -0.7s;
 -ms-animation-delay: -0.7s;
 -o-animation-delay: -0.7s;
}

.item-5 {
 animation-delay: -0.6s;
 -webkit-animation-delay: -0.6s;
 -moz-animation-delay: -0.6s;
 -ms-animation-delay: -0.6s;
 -o-animation-delay: -0.6s;
}

.item-6 {
 animation-delay: -0.5s;
 -webkit-animation-delay: -0.5s;
 -moz-animation-delay: -0.5s;
 -ms-animation-delay: -0.5s;
 -o-animation-delay: -0.5s;
}

.item-7 {
 animation-delay: -0.4s;
 -webkit-animation-delay: -0.4s;
 -moz-animation-delay: -0.4s;
 -ms-animation-delay: -0.4s;
 -o-animation-delay: -0.4s;
}

@-webkit-keyframes scale {
 0%, 40%, 100% {
 -moz-transform: scaleY(0.2);
 -ms-transform: scaleY(0.2);
 -o-transform: scaleY(0.2);
 -webkit-transform: scaleY(0.2);
 transform: scaleY(0.2);
 }

 20%, 60% {
 -moz-transform: scaleY(1);
 -ms-transform: scaleY(1);
 -o-transform: scaleY(1);
 -webkit-transform: scaleY(1);
 transform: scaleY(1);
 }
}
@-moz-keyframes scale {
 0%, 40%, 100% {
 -moz-transform: scaleY(0.2);
 -ms-transform: scaleY(0.2);
 -o-transform: scaleY(0.2);
 -webkit-transform: scaleY(0.2);
 transform: scaleY(0.2);
 }

 20%, 60% {
 -moz-transform: scaleY(1);
 -ms-transform: scaleY(1);
 -o-transform: scaleY(1);
 -webkit-transform: scaleY(1);
 transform: scaleY(1);
 }
}
@-ms-keyframes scale {
 0%, 40%, 100% {
 -moz-transform: scaleY(0.2);
 -ms-transform: scaleY(0.2);
 -o-transform: scaleY(0.2);
 -webkit-transform: scaleY(0.2);
 transform: scaleY(0.2);
 }

 20%, 60% {
 -moz-transform: scaleY(1);
 -ms-transform: scaleY(1);
 -o-transform: scaleY(1);
 -webkit-transform: scaleY(1);
 transform: scaleY(1);
 }
}
@keyframes scale {
 0%, 40%, 100% {
 -moz-transform: scaleY(0.2);
 -ms-transform: scaleY(0.2);
 -o-transform: scaleY(0.2);
 -webkit-transform: scaleY(0.2);
 transform: scaleY(0.2);
 }

 20%, 60% {
 -moz-transform: scaleY(1);
 -ms-transform: scaleY(1);
 -o-transform: scaleY(1);
 -webkit-transform: scaleY(1);
 transform: scaleY(1);
 }
}

js文件

var loading = {
 baosight : {
  showPageLoadingMsg : function(showMessage){
  if($("#_loading_div").length == 0){
   $("body").append('<div id="_loading_div"><span class="item-1"></span><span class="item-2"></span><span class="item-3"></span><span class="item-4"></span><span class="item-5"></span><span class="item-6"></span><span class="item-7"></span></div>');
  }
  if($("#_loadMsg").length == 0){
   $("body").append('<div id="_loadMsg">正在加載,請稍候... ...</div>');
  }
  if(showMessage == true || showMessage == "true" ){
   $("#_loadMsg").show();
  }
  $("#_loading_div").show();
  },
  hidePageLoadingMsg :function() {
  $("#_loading_div").hide();
  $("#_loadMsg").hide();
  }
 }
}

以上內容是本文的全部敘述，希望大家喜歡。

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