this.viewContainer.createEmbeddedView(this.templateRef); } else if (condition) { this.viewContainer.clear(); } } 在模板中使用该指令 <p *yunzhiUnless="condition">测试-p</p> 测试指令 html: <p> condition={{condition | json}} </p> <label for="show">显示</label> <input id="show" ty...
1 {{ username }}'s To Do List ~~~ src/app/app.component.ts:5:16 5 templateUrl: './app.component.html', ~~~ Error occurs in the template of component AppComponent. src/app/app.component.html:2:9 - error TS2339: Property 'itemCount' does not exist on type 'AppComponent'. 2 <...
<h1>Condition Failed!</h1> </ng-template> You can specify another template using ng-template, give it a variable using # and then reference it in the *ngIf statement with an else clause. You can also use a more explicit syntax with NgIf/Else/Then. It would look something like this:...
简单的运算mustache也支持 mustache还支持一些长的命令 mustache还可以输出三元表达式 三元运算符(简易版的if else)三元表达式:条件?...条件成立的命令:条件不成立的命令三元运算符是js中的知识点,原生js就有 5.2vue控制HTML属性超链接中的href在vue中可以不写死具体的路径和网址。...-- js:三元运算符 三元...
You can also use a more explicit syntax with NgIf/Else/Then. It would look something like this: 1 2 3 4 5 6 7 8 9 <div *ngIf="someCondition; then truthyTemplate else falsyTemplate"></...
$scope.condition = function(value){ if(.indexOf('m')>=0 && .indexOf('b')>=0){ return true } }; 1. 2. 3. 4. 5. 6. 7. 结果: *在这种情况下,既然已经自己定义了过滤的模式,就没有必要再定义第三个参数了. 2.comparator:
使用AngularJS的ng-if指令:如果使用了AngularJS,可以使用ng-if指令来根据条件控制元素的显示与隐藏。通过设置ng-if的条件为false,可以实现删除特定元素的效果。示例代码如下: 代码语言:txt 复制 <div ng-if="condition"> <!-- 要删除的元素内容 --> </div> 在上述代码中,当condition为false时,该div元素...
1 : 0) }, 0); if (length == l.length) { parent.checkState = 1; parent.selected = true; } else if (length == 0 && length2 == 0) { parent.checkState = 3 } else { parent.checkState = 2; parent.selected = false; } this.recursionParentCheck(parent); } } /** * 同步子集和...
I have a component that has conditional logic using an @if (or *ngIf) condition on a flag, e.g., @if (model.editable) or <ngContainer *ngIf="model.editable"...>, in its html file, which displays one set of controls for the true condition and another for false....
@Input() set ngBookIf(condition) { if (condition) { this.viewContainer.createEmbeddedView(this.template); } else { this.viewContainer.clear(); } } 使用ngBookIf <button class="ui primary button" (click)="toggle()"> Toggle </button> <div *ngBookIf="display"> The message is displayed...