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OleksandrAndriienkoOleksandrAndriienko
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Aspose.PDF for JavaScript via C++ 24.11
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‎AsposePDFforJS.js‎

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‎AsposePDFforJS.wasm.zip‎

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‎example.html‎

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@@ -256,6 +256,10 @@ <h2>Aspose.PDF for JavaScript via C++</h2>
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<label for="filePdfDeleteWatermarks">DEL WATERMARKS<span class="tooltip">Delete watermarks from a PDF-file</span></label>
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<input type="file" id="filePdfDeleteWatermarks" accept="application/pdf" onchange="ffilePdfDeleteWatermarks(event)">
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</div>
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<div class="column">
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<label for="filePdfMergeLayers">MERGE LAYERS<span class="tooltip">Merge layers a PDF-file</span></label>
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<input type="file" id="filePdfMergeLayers" accept="application/pdf" onchange="ffilePdfMergeLayers(event)">
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</div>
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</div>
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</div>
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@@ -281,6 +285,10 @@ <h2>Aspose.PDF for JavaScript via C++</h2>
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<label for="filePdfGetWordsCharactersCount">GET WORDS<span class="tooltip">Get words and characters count in a PDF-file</span></label>
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<input type="file" id="filePdfGetWordsCharactersCount" accept="application/pdf" onchange="ffilePdfGetWordsCharactersCount(event)">
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</div>
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<div class="column">
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<label for="filePdfGetPagesLayers">GET LAYERS<span class="tooltip">Get list layers from a PDF-file</span></label>
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<input type="file" id="filePdfGetPagesLayers" accept="application/pdf" onchange="ffilePdfGetPagesLayers(event)">
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</div>
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</div>
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</div>
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@@ -1106,6 +1114,29 @@ <h2>Aspose.PDF for JavaScript via C++</h2>
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file_reader.readAsArrayBuffer(e.target.files[0]);
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};
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var ffilePdfGetPagesLayers = function (e) {
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const file_reader = new FileReader();
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file_reader.onload = (event) => {
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const json = AsposePdfGetPagesLayers(event.target.result, e.target.files[0].name);
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if (json.errorCode == 0) document.getElementById('output').textContent = "JSON:\n" + JSON.stringify(json, null, 4);
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else document.getElementById('output').textContent = json.errorText;
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};
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file_reader.readAsArrayBuffer(e.target.files[0]);
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};
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var ffilePdfMergeLayers = function (e) {
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const file_reader = new FileReader();
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file_reader.onload = (event) => {
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/*Merge layers a PDF-file and save the "ResultPdfMergeLayers.pdf"*/
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const json = AsposePdfMergeLayers(event.target.result, e.target.files[0].name, "MergedLayer", "ResultPdfMergeLayers.pdf");
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if (json.errorCode == 0) document.getElementById('output').textContent = json.fileNameResult;
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else document.getElementById('output').textContent = json.errorText;
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/*Make a link to download the result file*/
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DownloadFile(json.fileNameResult, "application/pdf");
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};
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file_reader.readAsArrayBuffer(e.target.files[0]);
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};
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</script>
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<script>

‎example_worker.html‎

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<option value="AsposePdfDeleteHiddenText">Delete hidden text from a PDF-file</option>
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<option value="AsposePdfAddWatermark">Add watermark to a PDF-file</option>
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<option value="AsposePdfDeleteWatermarks">Delete watermarks from a PDF-file</option>
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<option value="AsposePdfMergeLayers">Merge layers a PDF-file</option>
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<optgroup label="Metadata PDF">
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<option value="AsposePdfSetInfo">Set info (metadata) in a PDF-file</option>
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<option value="AsposePdfGetInfo">Get info (metadata) from a PDF-file</option>
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<option value="AsposePdfGetAllFonts">Get list fonts from a PDF-file</option>
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<option value="AsposePdfRemoveMetadata">Remove metadata from a PDF-file</option>
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<option value="AsposePdfGetWordsCharactersCount">Get words and characters count in a PDF-file</option>
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<option value="AsposePdfGetPagesLayers">Get list layers from a PDF-file</option>
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<optgroup label="Security PDF">
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<option value="AsposePdfEncrypt">Encrypt a PDF-file</option>
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json.fonts.forEach(({fontName}) => listFonts += `\n${fontName}`);
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document.getElementById('output').textContent = listFonts;
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break;
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case 'AsposePdfGetPagesLayers':
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document.getElementById('output').textContent = 'Layers:\n' + json.pagesLayers.map((layer, index) => `page #${index + 1}: ${layer.join('; ')}`).join('\n');
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break;
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case 'AsposePdfFindText':
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case 'AsposePdfFindHiddenText':
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let listFragments= 'textFragments:';
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// AsposePdfDeleteAttachments, AsposePdfDeleteImages, AsposePdfDeleteJavaScripts,
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// AsposePdfFromTxt, AsposePdfAddAttachment, AsposePdfReplaceText, AsposePdfFromImage,
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// AsposePdfReplaceFont, AsposePdfDeleteHiddenText, AsposePdfAddWatermark, AsposePdfDeleteWatermarks
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// AsposePdfMergeLayers
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DownloadFile(json.fileNameResult, "application/pdf", params[0]);
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}
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}
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case 'AsposePdfGetInfo':
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case 'AsposePdfGetAllFonts':
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case 'AsposePdfGetWordsCharactersCount':
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case 'AsposePdfGetPagesLayers':
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transfer = [event.target.result];
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params = [event.target.result, ffile.name];
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break;
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transfer = [event.target.result];
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params = [event.target.result, ffile.name, text, fontName, fontSize, foregroundColor, xPosition, yPosition, rotation2, isBackground2, opacity2, `Result${operation}.pdf`];
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break;
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case 'AsposePdfMergeLayers':
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transfer = [event.target.result];
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params = [event.target.result, ffile.name, "MergedLayer", `Result${operation}.pdf`];
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break;
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default:
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// AsposePdfOptimize, AsposePdfAddPageNum, AsposePdfConvertToGrayscale, AsposePdfAConvertToPDF,
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// AsposePdfRemoveMetadata, AsposePdfRepair, AsposePdfOptimizeResource, AsposePdfDeleteAnnotations,

‎snippets/AsposePdfGetPagesLayers.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta charset="UTF-8">
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<title>Aspose.PDF for JavaScript via C++</title>
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</head>
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<body>
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<label for="filePdfGetPagesLayers">Choose a PDF-file to get list layers</label>
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<input type="file" id="filePdfGetPagesLayers" accept="application/pdf" onchange="ffilePdfGetPagesLayers(event)">
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<br>
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<pre id="output"></pre>
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</body>
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<!-- Load and initiate Aspose.PDF for JavaScript via C++ -->
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<script type="text/javascript" async src="AsposePDFforJS.js"></script>
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<script type="text/javascript">
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/// [Code snippet]
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var ffilePdfGetPagesLayers = function (e) {
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const file_reader = new FileReader();
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file_reader.onload = (event) => {
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/*Get list layers from a PDF-file*/
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const json = AsposePdfGetPagesLayers(event.target.result, e.target.files[0].name);
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if (json.errorCode == 0) document.getElementById('output').textContent = "JSON:\n" + JSON.stringify(json, null, 4);
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else document.getElementById('output').textContent = json.errorText;
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};
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file_reader.readAsArrayBuffer(e.target.files[0]);
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};
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/// [Code snippet]
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</script>
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</html>

‎snippets/AsposePdfGetPagesLayers_worker.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta charset="UTF-8">
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<title>Aspose.PDF for JavaScript via C++</title>
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</head>
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<body>
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<label for="filePdfGetPagesLayers">Choose a PDF-file to get list layers</label>
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<input type="file" id="filePdfGetPagesLayers" accept="application/pdf" onchange="ffilePdfGetPagesLayers(event)">
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<br>
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<pre id="output">please wait for loading...</pre>
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</body>
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<script type="text/javascript">
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/// [Code snippet]
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/*Create Web Worker*/
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const AsposePDFWebWorker = new Worker("AsposePDFforJS.js");
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AsposePDFWebWorker.onerror = evt => console.log(`Error from Web Worker: ${evt.message}`);
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AsposePDFWebWorker.onmessage = evt => document.getElementById('output').textContent =
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(evt.data == 'ready') ? 'loaded!' :
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(evt.data.json.errorCode == 0) ? `first page layers:\n${JSON.stringify(evt.data.json.pagesLayers[0], null, 4)}` : `Error: ${evt.data.json.errorText}`;
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/*Event handler*/
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const ffilePdfGetPagesLayers = e => {
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const file_reader = new FileReader();
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file_reader.onload = event => {
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/*Get list layers from a PDF-file - Ask Web Worker*/
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AsposePDFWebWorker.postMessage({ "operation": 'AsposePdfGetPagesLayers', "params": [event.target.result, e.target.files[0].name] }, [event.target.result]);
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};
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file_reader.readAsArrayBuffer(e.target.files[0]);
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};
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/// [Code snippet]
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</script>
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</html>

‎snippets/AsposePdfMergeLayers.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta charset="UTF-8">
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<title>Aspose.PDF for JavaScript via C++</title>
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</head>
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<body>
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<label for="filePdfMergeLayers">Choose a PDF-file to merge layers</label>
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<input type="file" id="filePdfMergeLayers" accept="application/pdf" onchange="ffilePdfMergeLayers(event)">
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<br>
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<pre id="output"></pre>
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</body>
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<!-- Load and initiate Aspose.PDF for JavaScript via C++ -->
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<script type="text/javascript" async src="AsposePDFforJS.js"></script>
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<script type="text/javascript">
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/// [Code snippet]
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var ffilePdfMergeLayers = function (e) {
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const file_reader = new FileReader();
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file_reader.onload = (event) => {
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/*Merge layers a PDF-file and save the "ResultPdfMergeLayers.pdf"*/
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const json = AsposePdfMergeLayers(event.target.result, e.target.files[0].name, "MergedLayer", "ResultPdfMergeLayers.pdf");
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if (json.errorCode == 0) document.getElementById('output').textContent = json.fileNameResult;
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else document.getElementById('output').textContent = json.errorText;
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/*Make a link to download the result file*/
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DownloadFile(json.fileNameResult, "application/pdf");
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};
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file_reader.readAsArrayBuffer(e.target.files[0]);
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};
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/// [Code snippet]
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</script>
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</html>

‎snippets/AsposePdfMergeLayers_worker.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta charset="UTF-8">
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<title>Aspose.PDF for JavaScript via C++</title>
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</head>
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<body>
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<label for="filePdfMergeLayers">Choose a PDF-file to merge layers</label>
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<input type="file" id="filePdfMergeLayers" accept="application/pdf" onchange="ffilePdfMergeLayers(event)">
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<br>
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<pre id="output">please wait for loading...</pre>
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</body>
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<script type="text/javascript">
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/// [Code snippet]
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/*Create Web Worker*/
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const AsposePDFWebWorker = new Worker("AsposePDFforJS.js");
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AsposePDFWebWorker.onerror = evt => console.log(`Error from Web Worker: ${evt.message}`);
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AsposePDFWebWorker.onmessage = evt => document.getElementById('output').textContent =
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(evt.data == 'ready') ? 'loaded!' :
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(evt.data.json.errorCode == 0) ? `Result:\n${DownloadFile(evt.data.json.fileNameResult, "application/pdf", evt.data.params[0])}` : `Error: ${evt.data.json.errorText}`;
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/*Event handler*/
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const ffilePdfMergeLayers = e => {
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const file_reader = new FileReader();
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file_reader.onload = event => {
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/*Merge layers a PDF-file and save the "ResultPdfMergeLayers.pdf" - Ask Web Worker*/
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AsposePDFWebWorker.postMessage({ "operation": 'AsposePdfMergeLayers', "params": [event.target.result, e.target.files[0].name, "MergedLayer", "ResultPdfMergeLayers.pdf"] }, [event.target.result]);
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};
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file_reader.readAsArrayBuffer(e.target.files[0]);
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};
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/// [Code snippet]
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/*Make a link to download the result file*/
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const DownloadFile = (filename, mime, content) => {
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mime = mime || "application/octet-stream";
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var link = document.createElement("a");
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link.href = URL.createObjectURL(new Blob([content], {type: mime}));
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link.download = filename;
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link.innerHTML = "Click here to download the file " + filename;
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document.body.appendChild(link);
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document.body.appendChild(document.createElement("br"));
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return filename;
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}
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</script>
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</html>

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