angular - 如何在元素的打字稿中触发鼠标悬停事件？

Question

我想知道如何在打字稿中的特定元素上绑定/触发鼠标悬停事件。这里的元素将根据键盘导航动态。

例如，如果按下向下箭头键，我应该能够激活一行ngx 数据表。

    @HostListener('document:keyup', ['$event'])
  handleKeyboardEvent(event: KeyboardEvent) {
    this.keyCode = event.keyCode;
    let datatableRow = document.getElementsByClassName("datatable-row-wrapper");

    //Check for Escape key navigation
    if (this.keyCode === 27) {
      // this._rows = [];
      this.searchInputValue = null;
    }
    //Check for Up arrow navigation
    if (this.keyCode === 38) {
      alert("Im Up key!");
      console.log(datatableRow);
      if (datatableRow.length !== 0) {
        console.log("datatable component", this.datatableComponent);
        console.log("Child node", datatableRow[0].childNodes[6]);
      }
    }}