What is the use of the enctype field when uploading files?
|
The enctype attribute of the FORM element specifies the encoding type used when the form data is submitted to the server. The default value is "application/x-www-form-urlencoded". This encoding method will urlencode the content before the form is sent. (Spaces are converted to "+", and special characters are converted to ASCII HEX values). For example, in the form field Fill in bb for firstname,, The result before sending is: bb+%2C%2C However, this encoding is inefficient when sending large amounts of text, text containing non-ASCII characters, or binary data to a server. When uploading files, the encoding type used should be "multipart/form-data", which can send both text data and binary data upload. The ENCTYPE attribute value of the <form> form on the browser side is multipart/form-data, which tells us that the transmitted data must use the multimedia transmission protocol. Since multimedia transmission involves large amounts of data, the uploaded file must be the post method, and the type attribute of <input> must be file. |
<<: Briefly describe the use and description of MySQL primary key and foreign key
>>: Get the calculated style in the CSS element (after cascading/final style)
Recommend
How to build a virtual machine with vagrant+virtualBox
1. Introduction Vagrant is a tool for building an...
How to use commands in Mysql to achieve hierarchical search help detailed explanation
Preface This article mainly introduces the releva...
Summary of Linux Logical Volume Management (LVM) usage
Managing disk space is an important daily task fo...
Summary of Vue component basics
Component Basics 1 Component Reuse Components are...
How to find out uncommitted transaction information in MySQL
A while ago, I wrote a blog post titled "Can...
Docker uses busybox to create a base image
The first line of a Docker image starts with an i...
Ubuntu 16.04 kernel upgrade steps
1. Environment Ubuntu 16.04 running on a virtual ...
JavaScript to achieve mouse drag effect
This article shares the specific code of JavaScri...
The whole process of developing a Google plug-in with vue+element
Simple function: Click the plug-in icon in the up...
Detailed Introduction to Nginx Installation and Configuration Rules
Table of contents 1. Installation and operation o...
Service management of source package installation under Linux
Table of contents 1. Startup management of source...
Docker deployment of Kafka and Spring Kafka implementation
This article mainly introduces the deployment of ...
Summary of front-end knowledge in the Gokudō game
background In the early stages of learning Japane...
Setting up a proxy server using nginx
Nginx can use its reverse proxy function to imple...
vue cli3 implements the steps of packaging by environment
The vue project built with cli3 is known as a zer...