如何在Ember中绑定<details>元素的open属性？

Question

我有一些作为工作流程一部分的入职步骤.这些步骤包含在<details>我第一次访问时默认打开的元素中.要关闭详细信息面板,用户可以单击确认他们理解步骤的按钮,或者只需单击<summary>元素,这是元素的默认行为.

<details open={{not isOnboarded}}>
  <summary>Getting Started</summary>
  <p>some steps about getting started</p>

  <button type="button" {{action 'completeOnboarding'}}>I Understand</button>
</details>

不幸的是,由于<details>元素open本地切换属性,它似乎正在删除Ember的绑定.

如何绑定Ember中的细节？

Answer 1

Ember将state(isOnboarded)存储在内存中,并在状态发生变化时重新呈现DOM.但是,Ember没有检查DOM来协调状态.请注意,这不是Ember的限制,大多数js框架也是这样工作的.DOM的不断协调在计算上是不可行的.

您可以阻止默认行为,并使用Ember来切换它.

controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  isOpen: true,
  actions: {
    toggleDetails () {
        this.toggleProperty('isOpen')
    },
    onNativeToggle (e) {
      // e here is the native HTMLEvent
      e.preventDefault()
      this.send('toggleDetails') // triggers the 'toggleDetails' action
    }
  }
});

template.hbs

<details open={{isOpen}} onclick={{action 'onNativeToggle'}}>
  <summary>Copyright 1999-2014.</summary>
  <p> - by Refsnes Data. All Rights Reserved.</p>
  <p>All content and graphics on this web site are the property of the company Refsnes Data.</p>
</details>

<button onclick={{action 'toggleDetails'}}> Click to Toggle via Ember </button>

Ember Twiddle:https://ember-twiddle.com/65a4cffe7e8fb8bcf41ff7064cc6d524 ? openFiles = templates.application.hbs%2C