AngularJS 事件
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小牛编辑
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2023-03-14
AngularJS 有自己的 HTML 事件指令。
ng-click 指令
ng-click 指令定义了 AngularJS 点击事件。
AngularJS 实例
<
div
ng-app=
""
ng-controller=
"myCtrl"
>
< button ng-click= "count = count + 1" >点我! < /button >
< p > {{ count }} < /p >
< /div >
< button ng-click= "count = count + 1" >点我! < /button >
< p > {{ count }} < /p >
< /div >
隐藏 HTML 元素
ng-hide 指令用于设置应用部分是否可见。
ng-hide="true" 设置 HTML 元素不可见。
ng-hide="false" 设置 HTML 元素可见。
AngularJS 实例
<
div
ng-app=
"myApp"
ng-controller=
"personCtrl"
>
< button ng-click= "toggle()" >隐藏/显示 < /button >
< p ng-hide= "myVar" >
名: < input type= "text" ng-model= "firstName" > < br >
姓名: < input type= "text" ng-model= "lastName" > < br >
< br >
Full Name: {{firstName + " " + lastName}}
< /p >
< /div >
< script >
var app = angular.module('myApp', []);
app.controller('personCtrl', function($scope) {
$scope.firstName = "John",
$scope.lastName = "Doe"
$scope.myVar = false;
$scope.toggle = function() {
$scope.myVar = !$scope.myVar;
};
});
< /script >
< button ng-click= "toggle()" >隐藏/显示 < /button >
< p ng-hide= "myVar" >
名: < input type= "text" ng-model= "firstName" > < br >
姓名: < input type= "text" ng-model= "lastName" > < br >
< br >
Full Name: {{firstName + " " + lastName}}
< /p >
< /div >
< script >
var app = angular.module('myApp', []);
app.controller('personCtrl', function($scope) {
$scope.firstName = "John",
$scope.lastName = "Doe"
$scope.myVar = false;
$scope.toggle = function() {
$scope.myVar = !$scope.myVar;
};
});
< /script >
应用解析:
第一部分 personController与控制器章节类似。
应用有一个默认属性: $scope.myVar = false;
ng-hide 指令设置 <p>元素及两个输入域是否可见, 根据 myVar 的值 (true 或 false) 来设置是否可见。
toggle() 函数用于切换 myVar 变量的值(true 和 false)。
ng-hide="true" 让元素 不可见。
显示 HTML 元素
ng-show 指令可用于设置应用中的一部分是否可见 。
ng-show="false" 可以设置 HTML 元素 不可见。
ng-show="true" 可以以设置 HTML 元素可见。
以下实例使用了 ng-show 指令:
AngularJS 实例
<
div
ng-app=
"myApp"
ng-controller=
"personCtrl"
>
< button ng-click= "toggle()" >隐藏/显示 < /button >
< p ng-show= "myVar" >
名: < input type= "text" ng-model= "firstName" > < br >
姓: < input type= "text" ng-model= "lastName" > < br >
< br >
姓名: {{firstName + " " + lastName}}
< /p >
< /div >
< script >
var app = angular.module('myApp', []);
app.controller('personCtrl', function($scope) {
$scope.firstName = "John",
$scope.lastName = "Doe"
$scope.myVar = true;
$scope.toggle = function() {
$scope.myVar = !$scope.myVar;
}
});
< /script >
< button ng-click= "toggle()" >隐藏/显示 < /button >
< p ng-show= "myVar" >
名: < input type= "text" ng-model= "firstName" > < br >
姓: < input type= "text" ng-model= "lastName" > < br >
< br >
姓名: {{firstName + " " + lastName}}
< /p >
< /div >
< script >
var app = angular.module('myApp', []);
app.controller('personCtrl', function($scope) {
$scope.firstName = "John",
$scope.lastName = "Doe"
$scope.myVar = true;
$scope.toggle = function() {
$scope.myVar = !$scope.myVar;
}
});
< /script >