Method splitText

lib/jsdom/living/nodes/Text-impl.js:26–72

(offset)

  // https://dom.spec.whatwg.org/#dom-text-splittext
  // https://dom.spec.whatwg.org/#concept-text-split
  splitText(offset) {
    const { length } = this;

    if (offset > length) {
      throw DOMException.create(this._globalObject, ["The index is not in the allowed range.", "IndexSizeError"]);
    }

    const count = length - offset;
    const newData = this.substringData(offset, count);

    const newNode = this._ownerDocument.createTextNode(newData);

    const parent = domSymbolTree.parent(this);

    if (parent !== null) {
      parent._insert(newNode, this.nextSibling);

      for (const range of this._liveRanges()) {
        const { _start, _end } = range;

        if (_start.node === this && _start.offset > offset) {
          range._setLiveRangeStart(newNode, _start.offset - offset);
        }

        if (_end.node === this && _end.offset > offset) {
          range._setLiveRangeEnd(newNode, _end.offset - offset);
        }
      }

      const nodeIndex = domSymbolTree.index(this);
      for (const range of parent._liveRanges()) {
        const { _start, _end } = range;

        if (_start.node === parent && _start.offset === nodeIndex + 1) {
          range._setLiveRangeStart(parent, _start.offset + 1);
        }

        if (_end.node === parent && _end.offset === nodeIndex + 1) {
          range._setLiveRangeEnd(parent, _end.offset + 1);
        }
      }
    }

    this.replaceData(offset, count, "");

    return newNode;
  }

  // https://dom.spec.whatwg.org/#dom-text-wholetext
  get wholeText() {