为 angular 2 实现 ngClassEven ngClassOdd [英] Implementing ngClassEven ngClassOdd for angular 2

问题描述

我尝试在 angular 2 应用程序中实现 ng-class-even 和 ng-class-odd(来自 angular 1)类型的行为.

我已经编写了下面的代码并且它工作正常，我想知道是否还有其他方法可以做到这一点.

HTML

<div *ngFor="#employee of employee; #index = index" [class.odd]="index%2==1" [class.even]="index%2==0" [class.selected]="员工 === selectedEmployee"><p>{{employee.name}}</p>

CSS

.odd {背景色:#f2f9ff；}.甚至 {背景颜色:#eceff3；}

解决方案

老方法

演示:http://plnkr.co/edit/YkcudQipF1c8iT5LCRyd?p=预览

<div *ngFor="#employee of员工;#索引=索引；#isOdd=奇数；#isEven=偶数"[class.odd]="isOdd"[class.even]="isEven"[class.selected]="employee === selectedEmployee"><p>{{employee.name}}</p>

<小时>新方式

用let(关键字)

替换#

<div *ngFor="让员工的员工;让指数 = 指数;让 isOdd=odd;让 isEven=even"[class.odd]="isOdd"[class.even]="isEven"[class.selected]="employee === selectedEmployee"><p>{{employee.name}}</p>

I tried to implement ng-class-even and ng-class-odd ( from angular 1) type behaviour in angular 2 application.

I have written the code below and its working fine, I want to know if there is any other way of doing this.

HTML

<div *ngFor="#employee of employees; #index = index" [class.odd]="index%2==1" [class.even]="index%2==0" [class.selected]="employee === selectedEmployee"> 
      <p>{{employee.name}}</p>
         </div>

CSS

.odd {
    background-color: #f2f9ff;

}
.even {
    background-color: #eceff3;
}

解决方案

OLD way

DEMO : http://plnkr.co/edit/YkcudQipF1c8iT5LCRyd?p=preview

<div *ngFor="#employee of employees; 
             #index =index;
             #isOdd=odd;
             #isEven=even" 

     [class.odd]="isOdd" 
     [class.even]="isEven" 
     [class.selected]="employee === selectedEmployee"> 
     <p>{{employee.name}}</p>
</div>

---

New Way

replace # by let(keyword)

<div *ngFor="let employee of employees; 
             let index =index;
             let isOdd=odd;
             let isEven=even" 

      [class.odd]="isOdd" 
      [class.even]="isEven" 
      [class.selected]="employee === selectedEmployee"> 
      <p>{{employee.name}}</p>

</div>

这篇关于为 angular 2 实现 ngClassEven ngClassOdd的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！