Angular ngx纬管罐'；t显示下拉标签

我用羽毛笔创建了一个自定义下拉菜单。我用羊皮纸

var Parchment = Quill.import('parchment');
    var lineHeightConfig = {
      scope: Parchment.Scope.INLINE,
      whitelist: [
        '1.0',
        '5.0',
        '10.0'
      ]
    };
    var lineHeightClass = new Parchment.Attributor.Class('lineheight', 'ql-line-height', lineHeightConfig);
    var lineHeightStyle = new Parchment.Attributor.Style('lineheight', 'line-height', lineHeightConfig);
    Parchment.register(lineHeightClass);
    Parchment.register(lineHeightStyle);

我在视图中定义了我的编辑器：

<quill-editor #editor >
<div quill-editor-toolbar>
          <!-- Basic buttons -->
          <span class="ql-formats">
            <button class="ql-bold" [title]="'Bold'"></button>
            <button class="ql-italic" [title]="'Italic'"></button>
            <button class="ql-underline" [title]="'Underline'"></button>
          </span>

          <span class="ql-formats">
            <select class="ql-lineheight" [title]="'Line Height'">
              <option selected></option>
              <option value="1.0"></option>
              <option value="5.0"></option>
              <option value="10.0"></option>
            </select>      
          </span>          
    </div>

</quill-editor>

新的下拉列表将显示并工作，但标签仍然为空

---

这里有一个

不确定这是正确的执行方式。。。我用了AfterViewInit

  ngAfterViewInit() {
    var lineheightToolbarButton = document.querySelector('.ql-lineheight');
    var lineheightButtonLabel = document.getElementsByClassName('ql-picker-label')[0]
    lineheightButtonLabel.innerHTML = "line height"+lineheightButtonLabel.innerHTML
    var lineheightItems = document.getElementsByClassName('ql-picker-item')

    for (var i = 0; i < lineheightItems.length; i++) {
       lineheightItems[i].innerHTML = lineheightItems[i].getAttribute('data-value')
    }
  }

ngAfterViewInit（）{
var lineheightToolbarButton=document.querySelector（'.ql lineheight'）；
var lineheightButtonLabel=document.getElementsByClassName（'ql-picker-label'）[0]
lineheightButtonLabel.innerHTML=“line height”+lineheightButtonLabel.innerHTML
var lineheightItems=document.getElementsByClassName（'ql-picker-item'））
对于（变量i=0；i

  ngAfterViewInit() {
    var lineheightToolbarButton = document.querySelector('.ql-lineheight');
    var lineheightButtonLabel = document.getElementsByClassName('ql-picker-label')[0]
    lineheightButtonLabel.innerHTML = "line height"+lineheightButtonLabel.innerHTML
    var lineheightItems = document.getElementsByClassName('ql-picker-item')

    for (var i = 0; i < lineheightItems.length; i++) {
       lineheightItems[i].innerHTML = lineheightItems[i].getAttribute('data-value')
    }
  }