Paginate.js

  determineNumberOfPages = () => {
    const { data, itemsPerPage } = this.props;
    let paginatedDataObject = {};

    let index = 0;
    let dataLength = data.length;
    let chunkArray = [];

    for (index = 0; index < dataLength; index += itemsPerPage) {
      let newChunk = data.slice(index, index + itemsPerPage);
      chunkArray.push(newChunk);
    }

    chunkArray.forEach((chunk, i) => {
      paginatedDataObject[i + 1] = chunk;
    });

    this.setState({
      totalPages: chunkArray.length,
      dataStartingIndex: itemsPerPage,
      pageData: paginatedDataObject,
      clickedOnNumber: 1
    });
  };