使用angular js + php显示结果,如何在加载数据之前显示加载器图像,这里我的代码写在下面,
如何在数据加载完成之前让AngularJS显示加载图像?
app.js文件
var app = angular.module('myApp3', ['ui.bootstrap']);
app.filter('startFrom', function() {
return function(input, start) {
if(input) {
start = +start; //parse to int
return input.slice(start);
}
return [];
}
});
app.controller('customersCrtl', function ($scope, $http, $timeout) {
$http.get('http://www.testurl.com/index.php/site/getprofileLocations').success(function(data){
$scope.list = data;
$scope.currentPage = 1; //current page
$scope.entryLimit = 20; //max no of items to display in a page
$scope.filteredItems = $scope.list.length; //Initially for no filter
$scope.totalItems = $scope.list.length;
});
$scope.setPage = function(pageNo) {
$scope.currentPage = pageNo;
};
$scope.filter = function() {
$timeout(function() {
$scope.filteredItems = $scope.filtered.length;
}, 10);
};
$scope.sort_by = function(predicate) {
$scope.predicate = predicate;
$scope.reverse = !$scope.reverse;
};
});
和php代码在这里
<html ng-app="myApp3" ng-app lang="en">
<div ng-controller="customersCrtl">
<div class="content" >
<div class="row">
<div class="col-md-2">PageSize:
<select ng-model="entryLimit" class="form-control">
<option>5</option>
<option>10</option>
<option>20</option>
<option>50</option>
<option>100</option>
</select>
</div>
<div class="col-md-3">Filter:
<input type="text" ng-model="search" ng-change="filter()" placeholder="Filter" class="form-control" />
</div>
<div class="col-md-4">
<h5>Filtered {{ filtered.length }} Of {{ totalItems}} Total Locations</h5>
</div>
</div>
<br/>
<div class="row">
<div class="col-md-12" ng-show="filteredItems > 0">
<table class="table table-striped table-bordered">
<thead>
<th>Id <a ng-click="sort_by('id');"><i class="glyphicon glyphicon-sort"></i></a></th>
<th>Place Name <a ng-click="sort_by('name');"><i class="glyphicon glyphicon-sort"></i></a></th>
<th>Category ID <a ng-click="sort_by('category_name');"><i class="glyphicon glyphicon-sort"></i></a></th>
</thead>
<tbody>
<tr ng-repeat="data in filtered = (list | filter:search | orderBy : predicate :reverse) | startFrom:(currentPage-1)*entryLimit | limitTo:entryLimit">
<td>{{data.id}}</td>
<td>{{data.name}}</td>
<td>{{data.category_name}}</td>
</tr>
</tbody>
</table>
</div>
<div class="col-md-12" ng-show="filteredItems == 0">
<div class="col-md-12">
<h4>No Locations found</h4>
</div>
</div>
<div class="col-md-12" ng-show="filteredItems > 0">
<div pagination="" page="currentPage" on-select-page="setPage(page)" boundary-links="true" total-items="filteredItems" items-per-page="entryLimit" class="pagination-small" previous-text="«" next-text="»"></div>
</div>
</div>
</div>
</div>
<script src="<?php echo Yii::app()->baseUrl; ?>/angular/js/angular.min.js"></script>
<script src="<?php echo Yii::app()->baseUrl; ?>/angular/js/ui-bootstrap-tpls-0.10.0.min.js"></script>
<script src="<?php echo Yii::app()->baseUrl; ?>/angular/app/app.js"></script>
</html>
答案 0 :(得分:18)
显示加载器onload并在加载数据后隐藏它。
$scope.showLoader = true;
$http.get('http://www.testurl.com/index.php/site/getprofileLocations').success(function(data){
$scope.showLoader = false;
// rest of your code
});
编辑:来自赛义德答案的HTML代码
<div ng-show="showLoader"><!-- so this div containing img will be dislpayed only when the showLoader is equal to true-->
<img src="source"> <!-- or any other spinner -->
</div>
答案 1 :(得分:1)
除了@Venugopal的回答。 在html中显示加载图像
<div ng-show="showLoader"><!-- so this div containing img will be dislpayed only when the showLoader is equal to true-->
<img src="source"> <!-- or any other spinner -->
</div>
答案 2 :(得分:0)
您需要在ajax调用之前显示加载程序映像,并在成功和错误处理程序中完成后将其删除。
你会在网上找到大量的装载机图像,你可以将它用于你的应用程序。
JS CODE
//show the loader image in center of screen & prevent any user interactions
$scope.imLoading = true;
$http.get('http://www.testurl.com/index.php/site/getprofileLocations').then(
function(data){
//hide the loader image & process successful data.
$scope.imLoading = false;
}, function (errorData) {
//hide the loader image & show error message to user
$scope.imLoading = false;
});
<强> CSS:强>
.im_loading{
display:none;
position:fixed;
top:50%;
left:50%;
margin:-35px 0px 0px -35px;
background:#fff url(../images/loader.gif) no-repeat center center;
width:70px;
height:70px;
z-index:9999;
-moz-border-radius:10px;
-webkit-border-radius:10px;
border-radius:10px;
-moz-box-shadow:1px 1px 3px #000;
-webkit-box-shadow:1px 1px 3px #000;
box-shadow:1px 1px 3px #000;
opacity:0.7;
filter:progid:DXImageTransform.Microsoft.Alpha(opacity=70);
}
HTML CODE:
<div class="im_loading" ng-show:"imLoading"></div>
注意:您的代码仅处理成功的ajax调用&amp;没有错误的调用,这是不好的,因为你的代码在返回错误时变得没有响应,所以你也需要处理错误情况。
答案 3 :(得分:0)
你可以做一件事:
像:
<div class="content" ng-show="!showLoader">
.....
</div>
因此,只有使用此加载器才会显示,直到您从服务器获取数据。
答案 4 :(得分:0)
每当我们在AngularJS中使用HTTP调用时,我们都希望默认显示加载图像。所以在这里,我们将通过使用自定义指令来实现这一目标。
JS CODE
int Numberone = 0, Numbertwo = 0;
char Op;
char line[512];
if (!fgets(line, sizeof line, stdin))
{
// error reading ...
}
if (sscanf(line, "%d %c %d", &Numberone, &Op, &Numbertwo) != 3)
{
// error parsing ...
}
<强> CSS:强>
var app = angular.module('appMyCustomModule',[]);
app.directive('dirCustomLoader', ['$http', function ($http) {
return {
restrict: 'E',
template: '<div class="loading-icon"></div>',
link: function (scope, element, attrs) {
scope.isLoading = function () {
return $http.pendingRequests.length > 0;
};
scope.$watch(scope.isLoading, function (value) {
if (value)
element.removeClass('ng-hide');
else
element.addClass('ng-hide');
});
}
};
}]);
HTML CODE:
.loading-icon {
background: url(static image url) no-repeat scroll center #fff;
display: inline-block;
font-size: 0;
height: 100%;
position: fixed;
top: 0;
left: 0;
width: 100%;
z-index: 9999999999999999999 !important;
opacity: .5;
}
答案 5 :(得分:0)
有一种更好的方法可以阻止显示两个图标:
(BAD WAY)
当angular操纵DOM时,它可以在隐藏加载图标之前显示搜索图标。这就是为什么它有两个元素是不好的。
<i class="fa fa-search" ng-hide="loadingData" ></i>
<i class="fa fa-circle-o-notch fa-spin" ng-show="loadingData"></i>
(好的方式)
这种方式可以防止在角度隐藏和显示元素时显示加载和搜索图标。
<i class="fa" ng-class="loadingData ? 'fa-circle-o-notch fa-spin' : 'fa-search' " ></i>
脚本就是这样的。
$scope.clickEventThatDoSomething = function () {
$scope.loadingData = true;
http.get('http://YourAPIUrl').then(function (data) {
$scope.loadingData = false;
$scope.data = data.data;
}).catch(function (err) {
$scope.loadingData = false;
})
}