Angular 8 在单击按钮时隐藏 div 并显示 div

Question

我是 angular 的新手，对隐藏和显示内容有疑问。我有 3 个按钮，按钮 A、按钮 B 和按钮 C。当我点击按钮 A 时，按钮 A 的内容即 div A 应该是可见的，按钮 B 的内容即 div B 和按钮 C 的内容即 div C 应该像那样隐藏.

但是我可以在点击相应的按钮时显示相应的 div，但是我无法隐藏另外两个 div。

谁能帮帮我。

提前致谢。

请在下面找到我正在试用的代码。

previousWeekData(){
  console.log("Previous Button Clicked");
  this.isShow = !this.isShow; 
}
nextWeekData(){
  console.log("Next Button Clicked");
  this.isShow = !this.isShow;   
}
todaysWeekData(){
  console.log("Todays Button Clicked");
  this.isShow = !this.isShow;
}

<div class="container">
 <div class="row">
                <div class="col-md-4">
                    <div class="btn-group">
                        <div class="btn btn-dark"  [(viewDate)]="viewDate" (click)="previousWeekData()">
                            Previous
                        </div>
                        <div class="btn btn-outline-secondary" (click)="todaysWeekData()">
                            Today
                        </div>
                        <div class="btn btn-dark"  [(viewDate)]="viewDate" (click)="nextWeekData()">
                            Next
                        </div>
                    </div>
                </div>
 </div>
 <div class="row">
 <div *ngIf = "isShow">Previous week datay.</div>
            <div *ngIf = "!isShow">Next week data.</div>
            <div *ngIf = "isShow">Current week data</div>
 </div>
</div>

Answer 1

<div *ngIf="div1">
    ABC
</div>
<div>
    DEF
</div>
<div>
    GHI
</div>
<button (click)="div1Function()"></button>
<button (click)="div2Function()"></button>
<button (click)="div3Function()"></button>

TS 文件

    div1:boolean=true;
    div2:boolean=true;
    div3:boolean=true;

    div1Function(){
        this.div1=true;
        this.div2=false;
        this.div3=false
    }

    div2Function(){
        this.div2=true;
        this.div1=false;
        this.div3=false
    }

    div3Function(){
        this.div3=true;
        this.div2=false;
        this.div1=false
    }

Answer 2

您可以通过维护组件 class 属性 currDiv 并将其初始化为 A.

来轻松做到这一点

在您的组件模板中，您可以有一个按钮将 div 显示为

<button type="button" (click)="ShowDiv('A')">Show A</button>

并且在模板 class 中，您可以将 `currDiv 设置为

ShowDiv(divVal: string) {
    this.currDiv = divVal;
}

并且您可以将 div 可见性控制为

<div *ngIf="currDiv == 'A'">
    Div A
</div>

StackBlitz 位于：https://stackblitz.com/edit/angular-showdivonclicktoggle

Answer 3

这样试试：

Working Demo

模板：

<div class="container">
    <div class="row">
        <div class="col-md-4">
            <div class="btn-group">
                <div class="btn btn-dark"
                    (click)="showDiv.previous = !showDiv.previous;showDiv.current = false;showDiv.next = false">
                    Previous
                </div>
                <div class="btn btn-outline-secondary"
                    (click)="showDiv.current = !showDiv.current;showDiv.previous = false;showDiv.next = false">
                    Today
                </div>
                <div class="btn btn-dark" (click)="showDiv.next = !showDiv.next;showDiv.previous = false;showDiv.current = false">
                    Next
                </div>
            </div>
        </div>
    </div>
    <div class="row">
        <div *ngIf="showDiv.previous">Previous week datay.</div>
        <div *ngIf="showDiv.next">Next week data.</div>
        <div *ngIf="showDiv.current">Current week data</div>
    </div>
</div>

TS:

showDiv = {
  previous : false,
  current : false,
  next : false
}

Answer 4

在 .ts 文件中

show = 'A';

在.html

<div class="container">
 <div class="row">
                <div class="col-md-4">
                    <div class="btn-group">
                        <div class="btn btn-dark"  [(viewDate)]="viewDate" (click)="show = 'A'">
                            Previous
                        </div>
                        <div class="btn btn-outline-secondary" (click)="show = 'B'">
                            Today
                        </div>
                        <div class="btn btn-dark"  [(viewDate)]="viewDate" (click)="show = 'C'">
                            Next
                        </div>
                    </div>
                </div>
    </div>
    <div class="row">
    <div *ngIf = "isShow == 'A'">Previous week datay.</div>
            <div *ngIf = "isShow == 'B'">Next week data.</div>
            <div *ngIf = "isShow == 'C'">Current week data</div>
    </div>
</div>

Answer 5

**IN HTML FILE :**

<div *ngIf="div1">
    ABC
</div>
<div>
    DEF
</div>
<div>
    GHI
</div>
<button (click)="div1Function()">Button  1</button>
<button (click)="div2Function()">Button  2</button>
<button (click)="div3Function()">Button  3</button>

**IN TS FILE :**

 div1:boolean=true;
    div2:boolean=true;
    div3:boolean=true;

    div1Function(){
        this.div1=true;
        this.div2=false;
        this.div3=false
    }

    div2Function(){
        this.div2=true;
        this.div1=false;
        this.div3=false
    }

    div3Function(){
        this.div3=true;
        this.div2=false;
        this.div1=false
    }

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