Method replaceData

lib/jsdom/living/nodes/CharacterData-impl.js:67–110

(offset, count, data)

  // https://dom.spec.whatwg.org/#dom-characterdata-replacedata
  // https://dom.spec.whatwg.org/#concept-cd-replace
  replaceData(offset, count, data) {
    const { length } = this;

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

    if (offset + count > length) {
      count = length - offset;
    }

    queueMutationRecord(MUTATION_TYPE.CHARACTER_DATA, this, null, null, this._data, [], [], null, null);

    const start = this._data.slice(0, offset);
    const end = this._data.slice(offset + count);
    this._data = start + data + end;

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

      if (_start.node === this && _start.offset > offset && _start.offset <= offset + count) {
        range._setLiveRangeStart(this, offset);
      }

      if (_end.node === this && _end.offset > offset && _end.offset <= offset + count) {
        range._setLiveRangeEnd(this, offset);
      }

      if (_start.node === this && _start.offset > offset + count) {
        range._setLiveRangeStart(this, _start.offset + data.length - count);
      }

      if (_end.node === this && _end.offset > offset + count) {
        range._setLiveRangeEnd(this, _end.offset + data.length - count);
      }
    }

    if (this.nodeType === TEXT_NODE && this.parentNode) {
      this.parentNode._childTextContentChangeSteps();
    }
  }
}

mixin(CharacterDataImpl.prototype, NonDocumentTypeChildNodeImpl.prototype);