Python to restore the string encoded by the JavaScript escape function, pythonescape
If you encounter a problem, you need to use Python to restore the escape in JavaScript. However, after a long time, you have not found the answer, so you have to
Usually if something needs to be coded, it means that something is not suitable for transmission. There are a variety of reasons, such as size too large to contain private data, and for URLs, the reason for encoding is because some characters in the
Wildcard
The wildcard character in SQL is used to replace one or more characters.
Use the SQL wildcard with the LIKE operator.
Common wildcards in SQL Server
%
Match any length (the length can be 0) characters
For example,'m % n' matches any
Escape character \• A special character constant;• Start with a backslash "\" followed by one or several characters.• Have a specific meaning, different from the original meaning of the character, it is called "escape" character.• Used primarily to
There are three functions in JavaScript that can encode strings, namely: Escape,encodeuri,encodeuricomponent, corresponding 3 decoding functions: Unescape,decodeuri, decodeURIComponent.Here's a brief look at the difference between them1 Escape ()
JavaScript code involves three functions: Escape, encodeuri, and encodeuricomponent. The corresponding three decoding functions are: Unescape, decodeuri, and decodeuricomponent.
1. encodeuricomponent is required when passing parameters so that the
Not a digression:
The "escape character" we're going to talk about in the second lesson doesn't seem to be related to our course. That is not the case. The escape character is in the
An integral part of JavaScript used in ASP. And the second lesson
Java programming often requires special actions, such as spaces and line breaks. Or some of your intention to use special symbols conflict with the special symbolic meaning of the program, we can not write directly need to escape these symbols,
1,% is an escape character, usually translated into the escape character, but also has a more image of the translation of escape characters, escaping characters. That is, the% not only escapes and replaces the specific string associated with it, but
Name of function
Use
Note
Htmlspecialchars
will be with &&, single and double quotes ' ",Greater than >, less than
&&->&'->& #039"->"<>->>
Htmlentities
Turn all characters into HTML
Specific methods
When the SQL where condition equals a string of special symbols, it is easy to make an error, cut off, not even execute, or cause the database to be dangerous.Let's simply test the followingCreating test data
The code
Escape, encodeURI, encodeURIComponent 1) Basic Introduction JS to encode the text involves 3 functions: escape,encodeuri,encodeuricomponent, Corresponding 3 decoding functions:decodeuri,decodeuricomponent 2) Use 1, passing parameters need to use
Today we mainly describe php and MySQL escape characters. We all know that the actual proportions of php and MySQL escape characters are still the majority. If you use this technology, if you are curious, the following articles will unveil its
PHP magic functions automatically escape magic_quotes_gpc and magic_quotes_runtim
PHP provides two magic reference functions for reference data: magic_quotes_gpc and magic_quotes_runtime. when INI is set to on, single quotation marks and double
ANSIEscape sequencesAre characters embedded in the text used to control formatting, color, and other output options on video text terminals. almost all terminal emulators designed to show text output from a remote computer, and (portable t for
JavaScript code involves three functions: Escape, encodeuri, and encodeuricomponent. The corresponding three decoding functions are: Unescape, decodeuri, and decodeuricomponent.
1. encodeuricomponent is required when passing parameters so that the
Common Regular Expressions/Corresponding escape characters/syntax
Only numbers are allowed: "^ [0-9] * $ ".
Only n digits can be entered: "^/d {n} $ ".
You can only enter at least N digits: "^/d {n,} $ ".
Only M ~ can be input ~ N-digit :. "^/D {m,
By default, ThinkPHP automatically escapes a form when submitting a form. ThinkPHP provides a default solution for automatically escaping when submitting a form. the example in this article describes how to automatically escape thinkphp when
First of all, we all know that these three things are coded.First, encodeURI () and encodeURIComponent ()These two are used for encoding and decoding when converting URLs.There's code that's going to decode,Decoding is decodeURI () and
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