Detailed explanation of form knowledge points

Legal XML documents can have several meanings. One is a well-format document, that is, a document written in compliance with XML rules; the other is a valid document, which is a document that has been verified to conform to a DTD. 1. Basic syntax rules XML is case-sensitive; the starting and ending tags of all elements must appear in pairs and be nested correctly; if an XML description is used, it must be the first line of the XML document: xml version="1.0"?> Element attributes must be enclosed in quotation marks. Both single and double quotation marks are acceptable, but they must appear in pairs. For example: XML naming rules: XML names start with an underscore or a letter; XML names can contain letters, numbers, periods, underscores and colons; XML names Cannot contain spaces; XML names cannot start with a number, but

1. XML basic syntax introduction

Introduction: Legal XML documents can have different meanings. One is a well-format document, that is, a document written in compliance with XML rules; the other is a valid document, which is a verified document. A document that conforms to a DTD.

2. WeChat applet-form component operation introduction

##Introduction: This article mainly introduces relevant information about the detailed explanation of the form component of the WeChat applet. Friends in need can refer to

3. ajax is solved with jsonp Cross-domain access issues

Introduction: Front-end: $.ajax({ type:"get", async: false,//Whether it is asynchronous url:"http://ip:port/servlet address", dataType: "jsonp", contentType: "application/x-www-form-urlencoded;charset=UTF- 8" ...

4. Python's powerful string formatting function-format

Introduction: Since python2 6, a new function str format() for formatting strings has been added, which is very powerful. So, it is different from the previous % formatting character. Compared with strings, what are the advantages?

##5.

Ajax subsequent operations in Thinkcmf##Introduction: There is a js-form-ajax component in thinkcmf that allows the form to be processed asynchronously. Now that I have integrated the layer plug-in, I need to close the child layer and refresh the parent layer after the form is successfully submitted in the pop-up box.

# How to achieve this?

##6. application/x-www-form-urlencoded

Introduction: :application/x-www-form-urlencoded： application/x-www-form-urlencoded: Form data is encoded as name/pairs. This is the standard encoding. multipart/form-data: Form data is encoded as a message, one for each control on the page. A part of text/plain: The form data is encoded in plain text, which does not contain any controls or characters. The enctype attribute of the form is the encoding method. There are two commonly used ones: application/x-www-form-

7. 3 ways to get POST data in PHP What does post mean jquery post curl post

Introduction: post: 3 ways to get POST data in PHP: How does PHP get the POST data of the form? This article introduces 3 methods of obtaining POST data and attaches the code. I hope it can help you. 1. Several methods for PHP to obtain POST data Method 1. The most common method is: $_POST['fieldname']; Note: Only data submitted by Content-Type: application/x-www-form-urlencoded can be received Explanation: This is the data method POST from the form 2. file_get_contents

8. urlencode PHP Chinese URL encoding and decoding urlencoderawurlencode

Introduction: urlencode:urlencode PHP Chinese URL encoding and decoding urlencoderawurlencode: The following is a detailed explanation: ///\ string urlencode (string str) Returns a string in which all non-alphanumeric characters except -_. will be replaced with a percent sign (%) followed by two hexadecimal digits. Spaces are encoded as plus signs (+). This encoding is the same as the encoding of WWW form POST data, and the same encoding as the application/x-www-form-urlencoded media type. Due to historical reasons, this encoding

9. halo theme mjolnir mix php+AJAX solution to the problem that sending Chinese will cause garbled characters

Introduction: halo theme mjolnir mix: halo theme mjolnir mix php+AJAX solution to the problem that sending Chinese will cause garbled characters: //If the transmission parameters are given directly, garbled characters will be generated! Copy the code as follows: http_request.open("POST",url,true); http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); http_request.send("action

10. Send email through html form_PHP tutorial

##Introduction: Send email through html form as follows: ? /**** *************************************************** ********************** Description: This is a simple script to send emails via a html-form to different users Da

[Related questions and answers]:

#Javascript-select and time plug-in verification issues? Please give me some advice! !

##python - Have you ever used django-crispy-form?

##clang-format How to indent pragma in c++?

android - Does the Android input file support photo uploading?

node.js - The node post request parameter is too long

The above is the detailed content of Detailed explanation of form knowledge points. For more information, please follow other related articles on the PHP Chinese website!