parallax/jsPDF · error · Error

Property tableHeaderRow does not exist.

Error message

Property tableHeaderRow does not exist.

What it means

printHeaderRow() outputs a previously stored header row configuration on subsequent pages of a multi-page table. It reads from this.internal.__cell__.tableHeaderRow, which is set by setTableHeaderRow() or automatically by the table() function. Calling printHeaderRow without first defining a header row means there is no configuration to render, so the function throws rather than silently producing an empty or broken layout.

Source

Thrown at src/modules/cell.js:636

   * except the lineNumber parameter is excluded
   */
  jsPDFAPI.setTableHeaderRow = function(config) {
    _initialize.call(this);
    this.internal.__cell__.tableHeaderRow = config;
  };

  /**
   * Output the store header row
   *
   * @name printHeaderRow
   * @function
   * @param {number} lineNumber The line number to output the header at
   * @param {boolean} new_page
   */
  jsPDFAPI.printHeaderRow = function(lineNumber, new_page) {
    _initialize.call(this);
    if (!this.internal.__cell__.tableHeaderRow) {
      throw new Error("Property tableHeaderRow does not exist.");
    }

    var tableHeaderCell;

    printingHeaderRow = true;
    if (typeof this.internal.__cell__.headerFunction === "function") {
      var position = this.internal.__cell__.headerFunction(
        this,
        this.internal.__cell__.pages
      );
      this.internal.__cell__.lastCell = new Cell(
        position[0],
        position[1],
        position[2],
        position[3],
        undefined,
        -1
      );

View on GitHub (pinned to a3930ce03a)

Solutions

1. Call doc.setTableHeaderRow(headerConfig) before calling printHeaderRow
2. Ensure doc.table() has been called at least once, which sets up the header row automatically
3. Check for the property before calling: if (doc.internal.__cell__?.tableHeaderRow) doc.printHeaderRow(lineNumber)
4. In page-break callbacks, verify the header row exists before reprinting

Example fix

// before
doc.printHeaderRow(1); // throws - no header set

// after - set header row first
doc.setTableHeaderRow(headerCells);
doc.printHeaderRow(1);
// or ensure table() ran first
doc.table(10, 10, data, headers);
// ... on new page:
doc.printHeaderRow(currentLineNumber, true);

// Check for tableHeaderRow before calling printHeaderRow
function safePrintHeaderRow(doc, lineNumber, newPage) {
  var cellState = doc.internal.__cell__;
  if (cellState && cellState.tableHeaderRow) {
    doc.printHeaderRow(lineNumber, newPage);
  } else {
    console.warn('tableHeaderRow not set - call setTableHeaderRow or table() first');
  }
}

/**
 * @param {jsPDF} doc
 * @returns {boolean}
 */
function hasTableHeaderRow(doc) {
  return !!(doc.internal.__cell__ && doc.internal.__cell__.tableHeaderRow);
}

try {
  doc.printHeaderRow(lineNumber, true);
} catch (e) {
  if (e.message.includes('tableHeaderRow does not exist')) {
    // Header not set yet - skip or set it
    doc.setTableHeaderRow(headerConfig);
    doc.printHeaderRow(lineNumber, true);
  } else throw e;
}

When it happens

Trigger: Calling doc.printHeaderRow(1) without first calling doc.table() or doc.setTableHeaderRow(). Calling printHeaderRow after a page break in custom table logic where setTableHeaderRow was not invoked. Using printHeaderRow in a total_pages/addPage callback before any table() call established the header.

Common situations: Custom multi-page table implementations that manually manage page breaks. Using printHeaderRow in the 'addPage' event handler without ensuring table() ran first. Mixing the old cell-based API with the table() API incorrectly. Calling printHeaderRow after resetting internal state.

Related errors

• No data for PDF table.
• getTextDimensions expects text-parameter to be of type Strin

AI-assisted analysis of parallax/jsPDF@a3930ce03a (2026-08-13). Data as JSON: /api/errors/04d1504a6b056af0. Report an issue: GitHub.