谷歌称， AngularJS可以让你扩展HTML的语法，以便清晰、简洁地表示应用程序中的组件，并允许将标准的HTM...
// 根据某个条件来修改条件变量的值 if (someCondition) { this.condition = true; // 显示HTML元素 } else { this.condition = false; // 隐藏HTML元素 } 通过以上步骤,就可以在Angular 7中使用if语句来添加HTML内容。根据条件变量的值,决定是否显示或隐藏HTML元素。
> <body ng-app> <div ng-controller="mainController"> <h2>ng-if else in angularjs</h2> <div> <div ng-if="data.FName==='Yogendra'"> Employee Name: {{FName}} {{LName}} </div> <div ng-if="data.FName===' '"> Sample Code </div> </div> </div> </body> </html>...
相比于在模板中硬编码复杂的 if/else 逻辑,更推荐创建一个专门的自定义指令来处理这一需求。 复制 import{Directive,Input,TemplateRef,ViewContainerRef}from'@angular/core';@Directive({selector:'[appDiscountBadge]'})exportclassDiscountBadgeDirective{@Input()setappDiscountBadge(isDiscounted:boolean){if(isDisco...
<html> <head> <script src="http://code.angularjs.org/1.2.0-rc.2/angularjs.js"></script> <script> function mainController($scope){ $scope.data = { FName: 'Yogendra',LName: 'Yadav'};} </script> <body ng-app> <div ng-controller="mainController"> <h2>ng-if else in angular...
<title>HTML with JavaScript If Statement</title> <script> function showElement() { var condition = true; // 这里可以是任何条件 if (condition) { document.getElementById("conditionalElement").style.display = "block"; } else { document.getElementById("conditionalElement").style.display = "none...
This stack overflow issue seems to be very similar, but it's proposed solution will not work for me since the if/else logic is dependent upon data distinct from what is being displayed: https://stackoverflow.com/questions/72774246/angular-html-forms-value-attribute-not-working-in-input-field...
本文转自:http://tylerscode.com/2017/03/angular-4-ngifelse/ As you may know it wasn’t that many months ago that Angular 2 left RC and went Full Release(back in August). We are already upon the next big release of Angular with v4. Angular 4.0.0-rc.1 was released in late ...
[转]Angular 4 *ngIf/Else As you may know it wasn’t that many months ago that Angular 2 left RC and went Full Release(back in August). We are already upon the next big release of Angular with v4. Angular 4.0.0-rc.1 was released in late February with rc.2 hot on it’s...
ng-show和ng-hide根据所给表达式的值来显示或隐藏HTML元素,ng-hide功能类似,但作用相反。元素的显示或隐藏是通过改变CSS的display属性值来实现的。 StackOverflow文章,也有人提问ng-if和ng-show的差别。这里直接附上: ng-if will remove elements from DOM. This means that all your handlers or anything else ...