我是Angularjs的新手,当我的控制器中的值发生变化时,我正在尝试更新进度条的宽度。
我有类似的东西:
<span id="percentage">$ {{getTotal()}} ({{getPercentage()}}%)</span>
<div class="progress-bar progress-bar-warning"
role="progressbar" aria-valuenow="10" aria-valuemin="0"
aria-valuemax="100" style="width: 10%">
<span class="sr-only">10% Complete (warning)</span>
</div>
我在控制器中有类似的东西:
$scope.total = 254.78;
$scope.threshold = 15000;
$scope.getPercentage = function () {
return (($scope.total * 100) / $scope.threshold).toFixed(2);
}
$scope.getTotal = function () {
return $scope.total;
}
如何更新进度条的宽度值?
谢谢, 阿尔贝托。
答案 0 :(得分:46)
ng-style指令可以解决问题。
<span id="percentage">$ {{getTotal()}} ({{getPercentage()}}%)</span>
<div class="progress-bar progress-bar-warning"
role="progressbar" aria-valuenow="{{getPercentage()}}" aria-valuemin="0"
aria-valuemax="100" ng-style="{width : ( getPercentage() + '%' ) }">
<span class="sr-only">{{getPercentage()}}% Complete (warning)</span>
</div>
答案 1 :(得分:3)
我会使用一个指令,它负责自己计算宽度。
module.directive("progressbar", function () {
return {
restrict: "A",
scope: {
total: "=",
current: "="
},
link: function (scope, element) {
scope.$watch("current", function (value) {
element.css("width", scope.current / scope.total * 100 + "%");
});
scope.$watch("total", function (value) {
element.css("width", scope.current / scope.total * 100 + "%");
})
}
};
});
答案 2 :(得分:2)
嗯,你应该这样做:
<div class="progress-bar progress-bar-warning"
role="progressbar" aria-valuenow="{{getPercentage()}}" aria-valuemin="0"
aria-valuemax="100" style="width: {{getPercentage()}} %">
<span class="sr-only">{{getPercentage()}}% Complete (warning)</span>
</div>
答案 3 :(得分:2)
我认为更好的解决方案是使用Angle -UI进度条而不是尝试重新发明轮https://angular-ui.github.io/bootstrap/#/progressbar。
<uib-progressbar value="50"></uib-progressbar>
答案 4 :(得分:1)
您可以编写自定义ng-style
:
<div class="progress-bar progress-bar-warning"
role="progressbar"
aria-valuenow="10"
aria-valuemin="0"
aria-valuemax="100"
ng-style="percentageStyle">
<span class="sr-only">10% Complete (warning)</span>
</div>
并在控制器中:
$scope.percentageStyle = {
width : $scope.getPercentage() + '%'
};
演示 Fiddle