{"id":2008,"date":"2023-08-19T08:38:09","date_gmt":"2023-08-18T23:38:09","guid":{"rendered":"https:\/\/oidema-jp.com\/media\/?p=2008"},"modified":"2024-03-18T23:47:49","modified_gmt":"2024-03-18T14:47:49","slug":"pdf-js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%81%9f%e3%81%ae%e3%81%a7%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab","status":"publish","type":"post","link":"https:\/\/oidema-jp.com\/media\/pdf-js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%81%9f%e3%81%ae%e3%81%a7%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab\/","title":{"rendered":"PDF.js\u3092\u4f7f\u3063\u3066\u307f\u305f\u306e\u3067\u30b5\u30f3\u30d7\u30eb"},"content":{"rendered":"\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8714466162539622\" crossorigin=\"anonymous\"><\/script>\n<ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-8714466162539622\" data-ad-slot=\"3806477513\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<p>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3044\u3066PDF.js\u3092\u4f7f\u3046\u3053\u3068\u304c\u3042\u3063\u305f\u306e\u3067\u3001\u305d\u306e\u969b\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u516c\u958b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/oidema-jp.com\/media\/pdf-js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%81%9f%e3%81%ae%e3%81%a7%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab\/#%E3%82%84%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B%E5%87%A6%E7%90%86\" >\u3084\u3063\u3066\u3044\u308b\u51e6\u7406<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/oidema-jp.com\/media\/pdf-js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%81%9f%e3%81%ae%e3%81%a7%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab\/#indexhtml\" >index.html<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/oidema-jp.com\/media\/pdf-js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%81%9f%e3%81%ae%e3%81%a7%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab\/#appjs\" >app.js<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/oidema-jp.com\/media\/pdf-js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%81%9f%e3%81%ae%e3%81%a7%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab\/#%E7%B0%A1%E5%8D%98%E3%81%AB%E4%BD%BF%E3%81%84%E6%96%B9%E3%82%92%E3%81%94%E7%B4%B9%E4%BB%8B%E3%81%84%E3%81%9F%E3%81%97%E3%81%BE%E3%81%99%E3%80%82\" >\u7c21\u5358\u306b\u4f7f\u3044\u65b9\u3092\u3054\u7d39\u4ecb\u3044\u305f\u3057\u307e\u3059\u3002<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/oidema-jp.com\/media\/pdf-js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%81%9f%e3%81%ae%e3%81%a7%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab\/#1_%E3%83%80%E3%82%A6%E3%83%B3%E3%83%AD%E3%83%BC%E3%83%89%E3%81%97%E3%81%9Fpdf-previewzip%E3%82%92%E8%A7%A3%E5%87%8D%E3%81%97%E3%81%A6%E3%81%8F%E3%81%A0%E3%81%95%E3%81%84%E3%80%82\" >1. \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305fpdf-preview.zip\u3092\u89e3\u51cd\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/oidema-jp.com\/media\/pdf-js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%81%9f%e3%81%ae%e3%81%a7%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab\/#2_%E8%A7%A3%E5%87%8D%E3%81%97%E3%81%9F%E3%83%87%E3%82%A3%E3%83%AC%E3%82%AF%E3%83%88%E3%83%AA%E5%86%85%E3%81%AEindexhtml%E3%82%92%E3%83%96%E3%83%A9%E3%82%A6%E3%82%B6%E3%81%A7%E9%96%8B%E3%81%8D%E3%81%BE%E3%81%99\" >2. \u89e3\u51cd\u3057\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306eindex.html\u3092\u30d6\u30e9\u30a6\u30b6\u3067\u958b\u304d\u307e\u3059<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/oidema-jp.com\/media\/pdf-js%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e3%81%bf%e3%81%9f%e3%81%ae%e3%81%a7%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab\/#3_%E3%83%96%E3%83%A9%E3%82%A6%E3%82%B6%E3%81%AB%E8%A1%8C%E3%81%8F%E3%81%A8%E3%80%8C%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%82%92%E9%81%B8%E6%8A%9E%E3%80%8D%E3%81%A8%E3%81%84%E3%81%86%E3%83%9C%E3%82%BF%E3%83%B3%E3%81%8C%E8%A1%A8%E7%A4%BA%E3%81%95%E3%82%8C%E3%81%A6%E3%81%84%E3%82%8B%E3%81%AE%E3%81%A7%E3%80%81%E3%83%9C%E3%82%BF%E3%83%B3%E3%82%92%E6%8A%BC%E4%B8%8B%E3%81%97%E3%81%A6PDF%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%82%92%E9%81%B8%E6%8A%9E%E3%81%97%E3%81%BE%E3%81%99%E3%80%82\" >3. \u30d6\u30e9\u30a6\u30b6\u306b\u884c\u304f\u3068\u300c\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e\u300d\u3068\u3044\u3046\u30dc\u30bf\u30f3\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u30dc\u30bf\u30f3\u3092\u62bc\u4e0b\u3057\u3066PDF\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"i-0\"><span class=\"ez-toc-section\" id=\"%E3%82%84%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B%E5%87%A6%E7%90%86\"><\/span>\u3084\u3063\u3066\u3044\u308b\u51e6\u7406<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5358\u7d14\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u30d5\u30a9\u30fc\u30e0\u306bpdf\u30d5\u30a1\u30a4\u30eb\u304c\u9078\u629e\u3055\u308c\u305f\u3089\u753b\u9762\u3067pdf\u3092\u30d7\u30ec\u30d3\u30e5\u30fc\u3059\u308b\u3068\u3044\u3046\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u3092\u5909\u66f4\u3057\u3064\u3064\u3001\u3046\u307e\u304f\u4f7f\u3063\u3066\u3082\u3089\u3048\u308c\u3070\u6d41\u7528\u53ef\u80fd\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-8714466162539622\" data-ad-slot=\"3806477513\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\"><span class=\"ez-toc-section\" id=\"indexhtml\"><\/span>index.html<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-sgb-codebox pre_tag\"><span><i class=\"fa fa-code\"><\/i>HTML<\/span><pre><code>&lt;!DOCTYPE html&gt;\n&lt;html lang=\"ja\"&gt;\n&lt;head&gt;\n    &lt;meta charset=\"UTF-8\"&gt;\n    &lt;title&gt;PDF Preview&lt;\/title&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n    &lt;input type=\"file\" id=\"pdfFileInput\" \/&gt;\n    &lt;div id=\"pdfViewer\"&gt;&lt;\/div&gt;\n\n    &lt;script src=\"pdfjs-dist\/build\/pdf.js\"&gt;&lt;\/script&gt;\n    &lt;script src=\"pdfjs-dist\/web\/viewer.js\"&gt;&lt;\/script&gt;\n    &lt;script src=\"app.js\"&gt;&lt;\/script&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;\n<\/code><\/pre><\/div>\n\n\n\n<ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-8714466162539622\" data-ad-slot=\"3806477513\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\"><span class=\"ez-toc-section\" id=\"appjs\"><\/span>app.js<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-sgb-codebox pre_tag\"><span><i class=\"fa fa-code\"><\/i>JavaScript<\/span><pre class=\"js-sng-highlight\"><code>\/* app.js *\/\ndocument.getElementById('pdfFileInput').addEventListener('change', function(event) {\n    const file = event.target.files[0];\n\n    if (file) {\n        const reader = new FileReader();\n\n        reader.onload = function(e) {\n            const pdfData = new Uint8Array(e.target.result);\n\n            const pdfjsLib = window['pdfjs-dist\/build\/pdf'];\n\n            pdfjsLib.GlobalWorkerOptions.workerSrc = 'pdfjs-dist\/build\/pdf.worker.js';\n\n            pdfjsLib.getDocument({ data: pdfData }).promise.then(function(pdf) {\n                const container = document.getElementById('pdfViewer');\n\n                for (let pageNum = 1; pageNum &lt;= pdf.numPages; pageNum++) {\n                    pdf.getPage(pageNum).then(function(page) {\n                        const scale = 1.5;\n                        const viewport = page.getViewport({ scale: scale });\n\n                        const canvas = document.createElement('canvas');\n                        const context = canvas.getContext('2d');\n                        canvas.height = viewport.height;\n                        canvas.width = viewport.width;\n\n                        const renderContext = {\n                            canvasContext: context,\n                            viewport: viewport\n                        };\n                        page.render(renderContext);\n\n                        container.appendChild(canvas);\n                    });\n                }\n            });\n        };\n\n        reader.readAsArrayBuffer(file);\n    }\n});\n<\/code><\/pre><\/div>\n\n\n<div id=\"sgb-css-id-1\" style=\"--sgb--custom--btn-width: 50;\">\n<p class=\"wp-block-sgb-btn sng-align-center\"><a style=\"background-color:#009EF3\" class=\"btn cubic2 shadow raised\" href=\" https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/08\/pdf-preview.zip\">\u30bd\u30fc\u30b9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b<i class=\"fas fa-angle-right wp-block-sgb-btn__icon-after\"><\/i><\/a><\/p>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\"><span class=\"ez-toc-section\" id=\"%E7%B0%A1%E5%8D%98%E3%81%AB%E4%BD%BF%E3%81%84%E6%96%B9%E3%82%92%E3%81%94%E7%B4%B9%E4%BB%8B%E3%81%84%E3%81%9F%E3%81%97%E3%81%BE%E3%81%99%E3%80%82\"><\/span>\u7c21\u5358\u306b\u4f7f\u3044\u65b9\u3092\u3054\u7d39\u4ecb\u3044\u305f\u3057\u307e\u3059\u3002<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-8714466162539622\" data-ad-slot=\"3806477513\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\"><span class=\"ez-toc-section\" id=\"1_%E3%83%80%E3%82%A6%E3%83%B3%E3%83%AD%E3%83%BC%E3%83%89%E3%81%97%E3%81%9Fpdf-previewzip%E3%82%92%E8%A7%A3%E5%87%8D%E3%81%97%E3%81%A6%E3%81%8F%E3%81%A0%E3%81%95%E3%81%84%E3%80%82\"><\/span>1. \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f<code>pdf-preview.zip<\/code>\u3092\u89e3\u51cd\u3057\u3066\u304f\u3060\u3055\u3044\u3002<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"380\" height=\"64\" src=\"https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-7.png\" alt=\"\" class=\"wp-image-2909\" srcset=\"https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-7.png 380w, https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-7-300x51.png 300w\" sizes=\"auto, (max-width: 380px) 100vw, 380px\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\"><span class=\"ez-toc-section\" id=\"2_%E8%A7%A3%E5%87%8D%E3%81%97%E3%81%9F%E3%83%87%E3%82%A3%E3%83%AC%E3%82%AF%E3%83%88%E3%83%AA%E5%86%85%E3%81%AEindexhtml%E3%82%92%E3%83%96%E3%83%A9%E3%82%A6%E3%82%B6%E3%81%A7%E9%96%8B%E3%81%8D%E3%81%BE%E3%81%99\"><\/span>2. \u89e3\u51cd\u3057\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e<code>index.html<\/code>\u3092\u30d6\u30e9\u30a6\u30b6\u3067\u958b\u304d\u307e\u3059<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"916\" height=\"364\" src=\"https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-5.png\" alt=\"\" class=\"wp-image-2907\" srcset=\"https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-5.png 916w, https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-5-300x119.png 300w, https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-5-768x305.png 768w\" sizes=\"auto, (max-width: 916px) 100vw, 916px\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\"><span class=\"ez-toc-section\" id=\"3_%E3%83%96%E3%83%A9%E3%82%A6%E3%82%B6%E3%81%AB%E8%A1%8C%E3%81%8F%E3%81%A8%E3%80%8C%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%82%92%E9%81%B8%E6%8A%9E%E3%80%8D%E3%81%A8%E3%81%84%E3%81%86%E3%83%9C%E3%82%BF%E3%83%B3%E3%81%8C%E8%A1%A8%E7%A4%BA%E3%81%95%E3%82%8C%E3%81%A6%E3%81%84%E3%82%8B%E3%81%AE%E3%81%A7%E3%80%81%E3%83%9C%E3%82%BF%E3%83%B3%E3%82%92%E6%8A%BC%E4%B8%8B%E3%81%97%E3%81%A6PDF%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%82%92%E9%81%B8%E6%8A%9E%E3%81%97%E3%81%BE%E3%81%99%E3%80%82\"><\/span>3. \u30d6\u30e9\u30a6\u30b6\u306b\u884c\u304f\u3068\u300c\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e\u300d\u3068\u3044\u3046\u30dc\u30bf\u30f3\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u30dc\u30bf\u30f3\u3092\u62bc\u4e0b\u3057\u3066PDF\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e\u3057\u307e\u3059\u3002<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"343\" src=\"https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-4-1024x343.png\" alt=\"\" class=\"wp-image-2906\" srcset=\"https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-4-1024x343.png 1024w, https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-4-300x100.png 300w, https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-4-768x257.png 768w, https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-4-940x315.png 940w, https:\/\/oidema-jp.com\/media\/wp-content\/uploads\/2023\/12\/image-4.png 1338w\" sizes=\"auto, (max-width: 1024px) 100vw, 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