<body>
<div>
<button id="prev" onclick="goPrevious()">Previous</button>
<button id="next" onclick="goNext()">Next</button>
<span>Page: <span id="page_num"></span>/ <span id="page_count"></span></span>
</div>
<div>
<canvas id="the-canvas" style="border:1px solid black"></canvas>
</div>
<!-- Use latest PDF.js build from Github -->
<script type="text/javascript" src="https://raw.github.com/mozilla/pdf.js/gh-pages/build/pdf.js"></script>
<script type="text/javascript">
//
// NOTE:
// Modifying the URL below to another server will likely *NOT* work. Because of browser
// security restrictions, we have to use a file server with special headers
// (CORS) - most servers don't support cross-origin browser requests.
//
var url = 'http://cdn.mozilla.net/pdfjs/tracemonkey.pdf'
//
// Disable workers to avoid yet another cross-origin issue (workers need the URL of
// the script to be loaded, and currently do not allow cross-origin scripts)
//
PDFJS.disableWorker = true
var pdfDoc = null,
pageNum = 1,
scale = 0.8,
canvas = document.getElementById('the-canvas'),
ctx = canvas.getContext('2d')
//
// Get page info from document, resize canvas accordingly, and render page
//
function renderPage(num) {
// Using promise to fetch the page
pdfDoc.getPage(num).then(function(page) {
var viewport = page.getViewport(scale)
canvas.height = viewport.height
canvas.width = viewport.width
// Render PDF page into canvas context
var renderContext = {
canvasContext: ctx,
viewport: viewport
}
page.render(renderContext)
})
// Update page counters
document.getElementById('page_num').textContent = pageNum
document.getElementById('page_count').textContent = pdfDoc.numPages
}
//
// Go to previous page
//
function goPrevious() {
if (pageNum <= 1)
return
pageNum--
renderPage(pageNum)
}
//
// Go to next page
//
function goNext() {
if (pageNum >= pdfDoc.numPages)
return
pageNum++
renderPage(pageNum)
}
//
// Asynchronously download PDF as an ArrayBuffer
//
PDFJS.getDocument(url).then(function getPdfHelloWorld(_pdfDoc) {
pdfDoc = _pdfDoc
renderPage(pageNum)
})
</script>
</body>
</html>
强。js手机在打开pdf文件进行浏览的时候预览兼容性是强的。js是手机上的用一种特殊的java语言编写出的JavaScript文件，可以通过启动器使用，达到丰富游戏方便玩家的作用类似于电脑上的mod。
