使用javascript跳转到PDF.js中的页面 [英] Jump to page in PDF.js with javascript

问题描述

我正在尝试使用PDF.js'查看器在页面上显示pdf文件。

I'm trying to use PDF.js' viewer to display pdf files on a page.

我已经完成了所有工作，但我想成为能够跳转到pdf中的特定页面。我知道您可以使用网址设置页面，但如果可能的话，我想在javascript中执行此操作。

I've gotten everything working, but I would like to be able to 'jump to' a specific page in the pdf. I know you can set the page with the url, but I would like to do this in javascript if it's possible.

我注意到有一个PDFJS对象在全局范围，似乎我应该能够访问那里的页面设置，但它是一个相当大的对象。有人知道怎么做吗？

I have noticed that there is a PDFJS object in the global scope, and it seems that I should be able to get access to things like page setting there, but it's a rather massive object. Anyone know how to do this?

推荐答案

您可以通过JavaScript设置页面：

You can set the page via JavaScript with:

var desiredPage = [the page you want];
PDFViewerApplication.page = desiredPage;

此处有一个事件处理程序，UI将相应调整。您可能希望确保这不会超出范围：

There is an event handler on this, and the UI will be adjusted accordingly. You may want to ensure this is not out of bounds:

function goToPage(desiredPage){
    var numPages = PDFViewerApplication.pagesCount;
    if((desiredPage > numPages) || (desiredPage < 1)){
        return;
    }
    PDFViewerApplication.page = desiredPage;
}

这篇关于使用javascript跳转到PDF.js中的页面的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！