AngularJs 切换 ng-class ng-click [英] AngularJs toggle ng-class ng-click
本文介绍了AngularJs 切换 ng-class ng-click的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
谁能为这个 JSFiddle 提供正确的方法:
Can anyone offer the correct approach to this JSFiddle:
<style>
.red #btn{
background-color:red;
}
.blue #btn{
background-color:blue;
}
</style>
<body ng-app="ap" ng-controller="con">
<button id="btn" ng-click="changeClass()">Change Class</button>
</body>
<script>
var app = angular.module("ap",[]);
app.controller("con",function($scope){
$scope.class = "red";
$scope.changeClass = function(){
if ($scope.class === "red #btn")
$scope.class = "blue #btn";
else
$scope.class = "red #btn";
};
});
</script>
我正在尝试通过 .class & 更改元素的类#ID.
I am trying to change the class of an element via .class & #ID.
提前致谢
感谢 tymeJV，新的 JSFiddle:
推荐答案
正确的方法是使用基于切换变量的 ng-class，考虑:
The correct approach would be using ng-class based on a toggle variable, consider:
CSS:
.red {
color: red;
}
JS:
$scope.toggle = false;
HTML:
<button id="btn" ng-click="toggle = !toggle" ng-class="{'red' : toggle}">Change Class</button>
ng-class 的工作原理是根据变量(toggle")是 true 还是 分配引用的类(在上面的红色")>假.
ng-class works by assigning the referenced class (in the above, "red") based on if the variable ("toggle") is true or false.
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