@ViewChildren不会使用动态添加的DOM元素进行更新

问题描述

我具有以下DOM结构

<div #carousalElement>
    <div  class="singleCaousalElement">
        <a>
            <img [src]="carousalURL1" class="carousalImage">
        </a>
    </div>
    <div  class="singleCaousalElement">
        <a>
            <img [src]="carousalURL2" class="carousalImage">
        </a>
    </div>
</div>

我可以使用ViewChildren

@ViewChildren('carousalElement') carousalElements;

问题::当我在#carousalElement div下动态添加新的div时，它没有显示在carousalElements数组下.

PROBLEM: When I dynamically add a new div under the #carousalElement div, it does not show up under the carousalElements array.

我缺少明显的东西吗?

推荐答案

Angular无法识别Angular指令或API未添加的HTML.同样，如果<div>没有模板变量#carousalElement，则@ViewChildren('carousalElement')也将找不到它.

Angular doesn't recognize HTML not added by Angular directives or APIs. Also if the <div> doesn't have a template variable #carousalElement, @ViewChildren('carousalElement') won't find it.

模板变量需要静态添加到组件模板中.动态添加它们是没有意义的. Angular处理仅在编译模板期间特定于Angular的模板构造.

Template variables need to be added statically in the components template. Adding them dynamically is meaningless. Angular processes Angular-specific template constructs only during compilation of a template.

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