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OleksandrAndriienkoOleksandrAndriienko
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Aspose.PDF for JavaScript via C++ 24.8
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‎AsposePDFforJS.js‎

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‎AsposePDFforJS.wasm.zip‎

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‎example.html‎

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@@ -240,6 +240,14 @@ <h2>Aspose.PDF for JavaScript via C++</h2>
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<label for="filePdfValidatePDFA">VALIDATE PDF/A<span class="tooltip">Choose a PDF-file to validate PDF/A compatibility</span></label>
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<input type="file" id="filePdfValidatePDFA" accept="application/pdf" onchange="ffilePdfValidatePDFA(event)">
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</div>
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<div class="column">
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<label for="filePdfFindHiddenText">FIND HIDDEN TEXT<span class="tooltip">Choose a PDF-file to find hidden text</span></label>
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<input type="file" id="filePdfFindHiddenText" accept="application/pdf" onchange="ffilePdfFindHiddenText(event)">
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</div>
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<div class="column">
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<label for="filePdfDeleteHiddenText">DEL HIDDEN TEXT<span class="tooltip">Choose a PDF-file to delete hidden text</span></label>
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<input type="file" id="filePdfDeleteHiddenText" accept="application/pdf" onchange="ffilePdfDeleteHiddenText(event)">
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</div>
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</div>
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</div>
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@@ -1032,6 +1040,27 @@ <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 ffilePdfFindHiddenText = 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 = AsposePdfFindHiddenText(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 ffilePdfDeleteHiddenText = 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 = AsposePdfDeleteHiddenText(event.target.result, e.target.files[0].name, "ResultPdfDeleteHiddenText.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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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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@@ -80,6 +80,8 @@
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<option value="AsposePdfFindText">Find text in a PDF-file</option>
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<option value="AsposePdfReplaceFont">Replace font in a PDF-file</option>
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<option value="AsposePdfValidatePDFA">Validate PDF/A compatibility a PDF-file</option>
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<option value="AsposePdfFindHiddenText">Find hidden text in a PDF-file</option>
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<option value="AsposePdfDeleteHiddenText">Delete hidden text from 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>
@@ -168,8 +170,9 @@
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document.getElementById('output').textContent = listFonts;
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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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json.textFragments.forEach(({xIndent, yIndent, fontName, fontSize}) => listFragments+= `\nxIndent: ${xIndent}, yIndent: ${yIndent}, fontName: ${fontName}, fontSize: ${fontSize}`);
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json.textFragments.forEach(({text, xIndent, yIndent, fontName, fontSize}) => listFragments+= `\ntext: ${text}, xIndent: ${xIndent}, yIndent: ${yIndent}, fontName: ${fontName}, fontSize: ${fontSize}`);
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document.getElementById('output').textContent = listFragments;
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break;
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case 'AsposePdfGetInfo':
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// AsposePdfSetBackgroundColor, AsposePdfDeleteAnnotations, AsposePdfDeleteBookmarks,
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// AsposePdfDeleteAttachments, AsposePdfDeleteImages, AsposePdfDeleteJavaScripts,
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// AsposePdfFromTxt, AsposePdfAddAttachment, AsposePdfReplaceText, AsposePdfFromImage,
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// AsposePdfReplaceFont
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// AsposePdfReplaceFont, AsposePdfDeleteHiddenText
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DownloadFile(json.fileNameResult, "application/pdf", params[0]);
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}
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}
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// AsposePdfOptimize, AsposePdfAddPageNum, AsposePdfConvertToGrayscale, AsposePdfAConvertToPDF,
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// AsposePdfRemoveMetadata, AsposePdfRepair, AsposePdfOptimizeResource, AsposePdfDeleteAnnotations,
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// AsposePdfDeleteBookmarks, AsposePdfDeleteAttachments, AsposePdfDeleteImages, AsposePdfDeleteJavaScripts,
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// AsposePdfFromTxt
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// AsposePdfFromTxt, AsposePdfFindHiddenText, AsposePdfDeleteHiddenText
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transfer = [event.target.result];
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params = [event.target.result, ffile.name, `Result${operation}.pdf`];
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}

‎snippets/AsposePdfDeleteHiddenText.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="filePdfDeleteHiddenText">Choose a PDF-file to delete hidden text</label>
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<input type="file" id="filePdfDeleteHiddenText" accept="application/pdf" onchange="ffilePdfDeleteHiddenText(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 ffilePdfDeleteHiddenText = function (e) {
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const file_reader = new FileReader();
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file_reader.onload = (event) => {
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/*Delete hidden text from a PDF-file and save the "ResultPdfDeleteHiddenText.pdf"*/
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const json = AsposePdfDeleteHiddenText(event.target.result, e.target.files[0].name, "ResultPdfDeleteHiddenText.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/AsposePdfDeleteHiddenText_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="filePdfDeleteHiddenText">Choose a PDF-file to delete hidden text</label>
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<input type="file" id="filePdfDeleteHiddenText" accept="application/pdf" onchange="ffilePdfDeleteHiddenText(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 ffilePdfDeleteHiddenText = e => {
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const file_reader = new FileReader();
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file_reader.onload = event => {
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/*Delete hidden text from a PDF-file and save the "ResultPdfDeleteHiddenText.pdf" - Ask Web Worker*/
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AsposePDFWebWorker.postMessage({ "operation": 'AsposePdfDeleteHiddenText', "params": [event.target.result, e.target.files[0].name, "ResultPdfDeleteHiddenText.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>

‎snippets/AsposePdfFindHiddenText.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="filePdfFindHiddenText">Choose a PDF-file to find hidden text</label>
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<input type="file" id="filePdfFindHiddenText" accept="application/pdf" onchange="ffilePdfFindHiddenText(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 ffilePdfFindHiddenText = function (e) {
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const file_reader = new FileReader();
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file_reader.onload = (event) => {
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/*Find hidden text in a PDF-file*/
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const json = AsposePdfFindHiddenText(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/AsposePdfFindHiddenText_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="filePdfFindHiddenText">Choose a PDF-file to find hidden text</label>
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<input type="file" id="filePdfFindHiddenText" accept="application/pdf" onchange="ffilePdfFindHiddenText(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: ${evt.message}`);
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AsposePDFWebWorker.onmessage = evt => document.getElementById('output').textContent =
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(evt.data == 'ready') ? 'loaded!' :
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(evt.data.json.errorCode == 0) ? `textFragments:\n${JSON.stringify(evt.data.json.textFragments, null, 4)}` : `Error: ${evt.data.json.errorText}`;
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/*Event handler*/
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const ffilePdfFindHiddenText = e => {
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const file_reader = new FileReader();
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file_reader.onload = event => {
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/*Find hidden text in a PDF-file - Ask Web Worker*/
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AsposePDFWebWorker.postMessage({ "operation": 'AsposePdfFindHiddenText', "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>

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