Method _clearSvgElement

src/material/icon/icon.ts:338–357

()

  }

  private _clearSvgElement() {
    const layoutElement: HTMLElement = this._elementRef.nativeElement;
    let childCount = layoutElement.childNodes.length;

    if (this._elementsWithExternalReferences) {
      this._elementsWithExternalReferences.clear();
    }

    // Remove existing non-element child nodes and SVGs, and add the new SVG element. Note that
    // we can't use innerHTML, because IE will throw if the element has a data binding.
    while (childCount--) {
      const child = layoutElement.childNodes[childCount];

      // 1 corresponds to Node.ELEMENT_NODE. We remove all non-element nodes in order to get rid
      // of any loose text nodes, as well as any SVG elements in order to remove any old icons.
      if (child.nodeType !== 1 || child.nodeName.toLowerCase() === 'svg') {
        child.remove();
      }
    }
  }

  private _updateFontIconClasses() {
    if (!this._usingFontIcon()) {