[PDF] Web Worker

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdn.grapecity.com/wijmo/5.latest/styles/wijmo.min.css">
<script src="https://cdn.grapecity.com/wijmo/5.latest/controls/wijmo.min.js"></script>
<script src="https://cdn.grapecity.com/wijmo/5.latest/controls/wijmo.grid.min.js"></script>
<script src="https://cdn.grapecity.com/wijmo/5.latest/controls/wijmo.pdf.min.js"></script>
<script src="https://cdn.grapecity.com/wijmo/5.latest/controls/wijmo.grid.pdf.min.js"></script>
<script src="https://cdn.grapecity.com/wijmo/5.latest/controls/wijmo.gauge.min.js"></script>
<script src="https://demo.grapecity.com/wijmo/sample/scripts/sample.js"></script>
<link rel="stylesheet" href="https://demo.grapecity.com/wijmo/sample/styles/sample.css">
<div class="container">

  <h1>Web Worker</h1>
  <p>Generate PDF documents in the background.</p>
  <p>By using Web Workers, we can generate PDF documents in a separate thread from the UI thread. This allows the application to be usable while the PDF is generated in the background. Otherwise, the application would freeze until the PDF is generated. For large documents, this could be a minute or even longer.</p>
  <label for="rowCount">Number of Rows</label>
  <select id="rowCount">
    <option value="10000">10,000</option>
    <option value="100000">100,000</option>
  </select><br>
  <button id="saveButton1" class="btn btn-default">Create PDF(using Web Worker)</button>&nbsp;
  <button id="saveButton2" class="btn btn-default">Create PDF(without Web Worker)</button><br>
  <div id="progressGauge"></div>
  <span id="progressText">0</span>% Done
  <div id="flexGrid"></div>

</div>

CSS

#flexGrid {
  height: 300px;
  margin-top: 20px;
}
#progressGauge {
  width: 400px;
  display: inline-block;
  vertical-align: middle;
}
#progressText {
  width: 30px;
  display: inline-block;
  text-align: right;
}
#saveButton1, #saveButton2 {
  width: 230px;
}
</style>
<link rel="stylesheet" href="https://demo.grapecity.com/wijmo/beta/styles/wijmo.min.css" />
<script src="https://demo.grapecity.com/wijmo/beta/controls/wijmo.min.js"></script>
<script src="https://demo.grapecity.com/wijmo/beta/controls/wijmo.pdf.min.js"></script>
<script src="https://demo.grapecity.com/wijmo/beta/controls/wijmo.grid.min.js"></script>
<script src="https://demo.grapecity.com/wijmo/beta/controls/wijmo.grid.pdf.min.js"></script>
<style>

JavaScript

var productNames = "Chai,Chang,Guaraná Fantástica,Sasquatch Ale,Steeleye Stout,Côte de Blaye,Chartreuse verte,Ipoh Coffee,Laughing Lumberjack Lager,Outback Lager,Rhönbräu Klosterbier,Lakkalikööri,Aniseed Syrup,Chef Anton's Cajun Seasoning,Chef Anton's Gumbo Mix,Grandma's Boysenberry Spread,Northwoods Cranberry Sauce,Genen Shouyu,Gula Malacca,Sirop d'érable,Vegie-spread,Louisiana Fiery Hot Pepper Sauce,Louisiana Hot Spiced Okra,Original Frankfurter grüne Soße,Pavlova,Teatime Chocolate Biscuits,Sir Rodney's Marmalade,Sir Rodney's Scones,NuNuCa Nuß-Nougat-Creme,Gumbär Gummibärchen,Schoggi Schokolade,Zaanse koeken,Chocolade,Maxilaku,Valkoinen suklaa,Tarte au sucre,Scottish Longbreads,Queso Cabrales,Queso Manchego La Pastora,Gorgonzola Telino,Mascarpone Fabioli,Geitost,Raclette Courdavault,Camembert Pierrot,Gudbrandsdalsost,Fløtemysost,Mozzarella di Giovanni,Gustaf's Knäckebröd,Tunnbröd,Singaporean Hokkien Fried Mee,Filo Mix,Gnocchi di nonna Alice,Ravioli Angelo,Wimmers gute Semmelknödel,Mishi Kobe Niku,Alice Mutton,Thüringer Rostbratwurst,Perth Pasties,Tourtière,Pâté chinois,Uncle Bob's Organic Dried Pears,Tofu,Rössle Sauerkraut,Manjimup Dried Apples,Longlife Tofu,Ikura,Konbu,Carnarvon Tigers,Nord-Ost Matjeshering,Inlagd Sill,Gravad lax,Boston Crab Meat,Jack's New England Clam Chowder,Røgede sild,Spegesild,Escargots de Bourgogne,Röd Kaviar".split(",");
var rowCount = document.getElementById('rowCount');
var saveButton1 = document.getElementById('saveButton1');
var saveButton2 = document.getElementById('saveButton2');
var progressGauge = new wijmo.gauge.LinearGauge('#progressGauge', {
  value: 0
});
var progressText = document.getElementById('progressText');
var isExporting = false;

var flexGrid = new wijmo.grid.FlexGrid('#flexGrid', {
  itemsSource: orders(rowCount.value)
});
flexGrid.columns[1].width = 200;
rowCount.addEventListener('change', function() {
  flexGrid.collectionView.sourceCollection = orders(rowCount.value);
});

// Create web worker
var cdn =...