How to use Layui to develop an application that supports online preview of PDF files-JS Tutorial-php.cn

Home

Web Front-end

JS Tutorial

How to use Layui to develop an application that supports online preview of PDF files

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Oct 24, 2023 pm 12:39 PM

Used to quickly build website pages.Development: Refers to making software

How to use Layui to develop an application that supports online preview of PDF files

With the development of the Internet, more and more applications require online preview of PDF files. This article will introduce how to use Layui to develop an application that supports online preview of PDF files, and provide specific code examples for reference.

1. Project preparation
First of all, you need to prepare the following development environment:

Node.js and npm: used to install and manage project dependencies.
Visual Studio Code or other favorite code editor.
Layui: A simple and easy-to-use front-end UI framework.

2. Create a project

Open a terminal or command prompt, enter the folder where the project is located, and execute the following command to create a new project:
```
mkdir laypdf-app
cd laypdf-app
npm init -y
```
Install Layui:
```
npm install layui
```

Create an HTML file named index.html in the root directory of the project and add the following content:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>LayPDF App</title>
    <link rel="stylesheet" href="./node_modules/layui-src/dist/css/layui.css">
    <script src="./node_modules/layui-src/dist/layui.js"></script>
</head>
<body>
    <div class="layui-container">
        <div class="layui-row">
            <div class="layui-col-md8">
                <div class="layui-card">
                    <div class="layui-card-body">
                        <div id="pdf-container"></div>
                    </div>
                </div>
            </div>
            <div class="layui-col-md4">
                <div class="layui-card">
                    <div class="layui-card-body">
                        <input type="file" class="layui-upload-file" id="pdf-file" accept="application/pdf">
                        <hr>
                        <button class="layui-btn layui-btn-normal" id="pdf-upload">上传PDF文件</button>
                    </div>
                </div>
            </div>
        </div>
    </div>
    <script>
        layui.use(['upload', 'layer', 'element'], function() {
            var upload = layui.upload;
            var layer = layui.layer;
            var element = layui.element;

            // 初始化PDF预览器
            var pdfContainer = document.getElementById('pdf-container');
            var pdfViewer = new PDFObject({
                url: '',
                pdfOpenParams: {
                    navpanes: 0,
                    toolbar: 0,
                    statusbar: 0,
                    view: 'FitV'
                }
            }).embed(pdfContainer);

            // 上传PDF文件
            upload.render({
                elem: '#pdf-upload',
                accept: 'file',
                exts: 'pdf',
                choose: function(obj) {
                    obj.preview(function(index, file, result) {
                        // 预览上传的文件
                        pdfViewer.url = result;
                    });
                }
            });
        });
    </script>
</body>
</html>

3. Run the application

Execute the following command in the terminal or command prompt to start the application:
```
node index.html
```
Access http://localhost:3000 in the browser, and you will see a page with a PDF previewer and upload button.

4. Description

Layui's upload component is used to process PDF file uploads, and the uploaded file information can be obtained through the choose callback function.
PDFObject is a JavaScript tool library for embedding PDF documents, which can display PDF files in specified HTML elements.
The preview of uploaded files is implemented through the embed method of PDFObject. The preview can be achieved by passing the uploaded file path as a parameter.

Summary
This article introduces how to use Layui to develop an application that supports online preview of PDF files. Uploading and previewing PDF files can be easily achieved through Layui's upload component and PDFObject library. Developers can adjust and optimize the code according to actual needs to meet their own application scenarios.

The above is the detailed content of How to use Layui to develop an application that supports online preview of PDF files. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Replace String Characters in JavaScriptMar 11, 2025 am 12:07 AM

Detailed explanation of JavaScript string replacement method and FAQ This article will explore two ways to replace string characters in JavaScript: internal JavaScript code and internal HTML for web pages. Replace string inside JavaScript code The most direct way is to use the replace() method: str = str.replace("find","replace"); This method replaces only the first match. To replace all matches, use a regular expression and add the global flag g: str = str.replace(/fi

Build Your Own AJAX Web ApplicationsMar 09, 2025 am 12:11 AM

So here you are, ready to learn all about this thing called AJAX. But, what exactly is it? The term AJAX refers to a loose grouping of technologies that are used to create dynamic, interactive web content. The term AJAX, originally coined by Jesse J

How do I create and publish my own JavaScript libraries?Mar 18, 2025 pm 03:12 PM

Article discusses creating, publishing, and maintaining JavaScript libraries, focusing on planning, development, testing, documentation, and promotion strategies.

How do I optimize JavaScript code for performance in the browser?Mar 18, 2025 pm 03:14 PM

The article discusses strategies for optimizing JavaScript performance in browsers, focusing on reducing execution time and minimizing impact on page load speed.

jQuery Matrix EffectsMar 10, 2025 am 12:52 AM

Bring matrix movie effects to your page! This is a cool jQuery plugin based on the famous movie "The Matrix". The plugin simulates the classic green character effects in the movie, and just select a picture and the plugin will convert it into a matrix-style picture filled with numeric characters. Come and try it, it's very interesting! How it works The plugin loads the image onto the canvas and reads the pixel and color values: data = ctx.getImageData(x, y, settings.grainSize, settings.grainSize).data The plugin cleverly reads the rectangular area of the picture and uses jQuery to calculate the average color of each area. Then, use

How do I debug JavaScript code effectively using browser developer tools?Mar 18, 2025 pm 03:16 PM

The article discusses effective JavaScript debugging using browser developer tools, focusing on setting breakpoints, using the console, and analyzing performance.

How to Build a Simple jQuery SliderMar 11, 2025 am 12:19 AM

This article will guide you to create a simple picture carousel using the jQuery library. We will use the bxSlider library, which is built on jQuery and provides many configuration options to set up the carousel. Nowadays, picture carousel has become a must-have feature on the website - one picture is better than a thousand words! After deciding to use the picture carousel, the next question is how to create it. First, you need to collect high-quality, high-resolution pictures. Next, you need to create a picture carousel using HTML and some JavaScript code. There are many libraries on the web that can help you create carousels in different ways. We will use the open source bxSlider library. The bxSlider library supports responsive design, so the carousel built with this library can be adapted to any

How to Upload and Download CSV Files With AngularMar 10, 2025 am 01:01 AM

Data sets are extremely essential in building API models and various business processes. This is why importing and exporting CSV is an often-needed functionality.In this tutorial, you will learn how to download and import a CSV file within an Angular

See all articles

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)

3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

R.E.P.O. Best Graphic Settings

3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Assassin's Creed Shadows: Seashell Riddle Solution

1 weeks agoByDDD

R.E.P.O. How to Fix Audio if You Can't Hear Anyone

3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Where to find the Crane Control Keycard in Atomfall

1 weeks agoByDDD

Hot Tools

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.