Home Web Front-end H5 Tutorial HTML5每日一练之FileList文件列表对象的应用

HTML5每日一练之FileList文件列表对象的应用

May 17, 2016 am 09:09 AM
admin ht

在过去,上传文件的时候,我们每次都只能一次选择一个文件。如果想实现多文件上传,要么动态的增加file框要么使用Flash来代替。现在我们在HTML5中要想实现这个功能,是轻而易举的事情。

FileList对象:
FileList对象,其实就是多个file对象的列表。在HTML5中要想多文件上传我们只需要在原有的file类型的Input中加入multple属性即可。

HTML





JavaScript
为了能够让大家看清楚这个上传文本框,简单的写了一下JS,通过它来遍历出filelist中的文件,JS看不懂的话也没有关系,在这里主要是为了演示此控件的确获取了多个文件。
  • function showFileName()
  • {
  •         var file = document.getElementById("W3Cfuns_FileList");
  •         for(var i = 0, j = file.files.length; i
  •         {
  •                alert(file.files.name);
  •         }
  • }



完整的代码

  •    
  •         
  •         W3Cfuns_FileList
  •         
  •         function showFileName()
  •         {
  •                         var file = document.getElementById("W3Cfuns_FileList");
  •                         for(var i = 0, j = file.files.length; i
  •                         {
  •                                      alert(file.files.name);
  •                         }
  •         }
  •         
  •    

  •    
  •         
  •         
  •    




Statement of this Website
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

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to run the h5 project How to run the h5 project Apr 06, 2025 pm 12:21 PM

Running the H5 project requires the following steps: installing necessary tools such as web server, Node.js, development tools, etc. Build a development environment, create project folders, initialize projects, and write code. Start the development server and run the command using the command line. Preview the project in your browser and enter the development server URL. Publish projects, optimize code, deploy projects, and set up web server configuration.

What exactly does H5 page production mean? What exactly does H5 page production mean? Apr 06, 2025 am 07:18 AM

H5 page production refers to the creation of cross-platform compatible web pages using technologies such as HTML5, CSS3 and JavaScript. Its core lies in the browser's parsing code, rendering structure, style and interactive functions. Common technologies include animation effects, responsive design, and data interaction. To avoid errors, developers should be debugged; performance optimization and best practices include image format optimization, request reduction and code specifications, etc. to improve loading speed and code quality.

How to make h5 click icon How to make h5 click icon Apr 06, 2025 pm 12:15 PM

The steps to create an H5 click icon include: preparing a square source image in the image editing software. Add interactivity in the H5 editor and set the click event. Create a hotspot that covers the entire icon. Set the action of click events, such as jumping to the page or triggering animation. Export H5 documents as HTML, CSS, and JavaScript files. Deploy the exported files to a website or other platform.

What is the H5 programming language? What is the H5 programming language? Apr 03, 2025 am 12:16 AM

H5 is not a standalone programming language, but a collection of HTML5, CSS3 and JavaScript for building modern web applications. 1. HTML5 defines the web page structure and content, and provides new tags and APIs. 2. CSS3 controls style and layout, and introduces new features such as animation. 3. JavaScript implements dynamic interaction and enhances functions through DOM operations and asynchronous requests.

What application scenarios are suitable for H5 page production What application scenarios are suitable for H5 page production Apr 05, 2025 pm 11:36 PM

H5 (HTML5) is suitable for lightweight applications, such as marketing campaign pages, product display pages and corporate promotion micro-websites. Its advantages lie in cross-platformity and rich interactivity, but its limitations lie in complex interactions and animations, local resource access and offline capabilities.

How to make pop-up windows with h5 How to make pop-up windows with h5 Apr 06, 2025 pm 12:12 PM

H5 pop-up window creation steps: 1. Determine the triggering method (click, time, exit, scroll); 2. Design content (title, text, action button); 3. Set style (size, color, font, background); 4. Implement code (HTML, CSS, JavaScript); 5. Test and deployment.

Is H5 page production a front-end development? Is H5 page production a front-end development? Apr 05, 2025 pm 11:42 PM

Yes, H5 page production is an important implementation method for front-end development, involving core technologies such as HTML, CSS and JavaScript. Developers build dynamic and powerful H5 pages by cleverly combining these technologies, such as using the <canvas> tag to draw graphics or using JavaScript to control interaction behavior.

What Does H5 Refer To? Exploring the Context What Does H5 Refer To? Exploring the Context Apr 12, 2025 am 12:03 AM

H5referstoHTML5,apivotaltechnologyinwebdevelopment.1)HTML5introducesnewelementsandAPIsforrich,dynamicwebapplications.2)Itsupportsmultimediawithoutplugins,enhancinguserexperienceacrossdevices.3)SemanticelementsimprovecontentstructureandSEO.4)H5'srespo

See all articles