Analysis and _php techniques of deep password plus salt principle

We know that if you hash the password directly, the hacker can get a user's password by getting the password hash value, and then by checking the hash value dictionary (such as MD5 password to crack the website).Adding salt can solve this problem to

PHP5.3 installation Zend Guard loader graphics and text tutorials _php Tips

Zend optimizer/3.3.3 decryption plus code optimization, improve the execution speed of PHP applications, significantly reduce the server's CPU load.Zend Guard loader/5.5.0/6.0 decryption plus code optimization, improve the execution speed of PHP appl

JS Random number code Daquan 1th/2 page _javascript tips

JS Random Number Foundation First, is the JavaScript random number function math.random () Random (Math.random method) public static random (): number Returns a pseudo random number n, where 0 <= n < 1. The number returned is called "pseudo r

Examples of HTML (), text (), Val () differences in jquery are described in _jquery

1.HTML HTML (): Gets the HTML content of the first matching element. This function is not available for XML documents. But can be used for XHTML documentsHTML (val): Sets the HTML content for each matching element. This function is not available for

A friend of the selector can try this idea deferred execution merge selection operation _javascript Skill

This looks like four of the 4 selection operations in the same code segment as follows $class ("a"). Color ("green"); $class ("B"). Color ("red"); $class ("C"). Color ("green"); $class ("D"). Color ("red"); Finally, only one traversal can be achieved

JS Chinese character sorting problem support in Chinese and English mixed row, compatible with various browsers, including Chrome_javascript skills

Specific technology 1. Using GB encoding and Unicode conversion 2. Array Association Ordering Note: GB code library address Http://demo.jb51.net/jslib/qswhGB2312.js Code (demo is very simple to write) Copy Code code as follows: <scrip

A brief analysis of the HTML (), text (), Val () difference in jquery (_jquery)

1.HTML HTML (): Gets the HTML content of the first matching element. This function is not available for XML documents. But can be used for XHTML documents HTML (val): Sets the HTML content for each matching element. This function is not available f

jquery through the control node implementation only in the foreground through the Get method to complete the parameter pass _jquery

This example describes jquery through the control node implementation only in the foreground through the Get method to complete the parameter pass. Share to everyone for your reference. The specific analysis is as follows: This is also the content o

Set Homepage Favorites compatible with 360/Firefox/Google/ie and other mainstream browser code _javascript tips

No need to find, I tried many times, ie, Firefox, Google browser This code is irreversible compatibility. Here's my simple solution. The way to solve this problem completely is to create an action step help page that adds the homepage as well as othe

Parse using JS to determine only numbers, letters and other methods of verification (summary) _javascript tips

JS can only be a number and a decimal point0. Cannot enter Chinese1) <input onpaste= "return false;" type= "text" name= "TextField" style= "width:400px"; Ime-mode:disabled "Value=" ">2) <script>function Chkit (frm) {if (Frm.n1.value.lengt

Basic usage of JS array and array removing elements based on subscript (numeric or character) _javascript tips

1. Create an array Copy Code code as follows: var array = new Array (); var array = new Array (size);//Specify the length of the array var array = new Array (item1,item2......itemn);//Create an array and assign a value 2,

JS use array length property to empty and truncate an array of small examples _javascript tips

1. Empty the array with length: Copy Code code as follows: <script> var arr1 = [' aaa ', ' bbbb ', ' http://www.jb51.net ']; alert (ARR1); arr1.length = 0; alert (ARR1); Array is empty </script> 2. Use length truncate

The method of obtaining the absolute value of variable in JS _javascript skill

This paper illustrates the method of obtaining the absolute value of variables in JS. Share to everyone for your reference. The specific analysis is as follows: Absolute value in JS we directly use the ABS function to seek, here to sort out some of

JS to determine the browser type, version of the code (with multiple instance code) _javascript Tips

In the front-end development of the Web site, browser compatibility problem has let us rush, the birth of Chrome did not know to give us a lot of trouble. Browser compatibility is the first problem to be solved by the front-end development framework,

Example details JSON data format and JSON format data field string conversion _javascript tips

JSON (JavaScript Object notation) is a lightweight data interchange format. JSON uses a completely language-independent text format that makes JSON an ideal data exchange language. Easy for people to read and write, but also easy to machine parsing a

Pure JS code to make the Web clock special effects "attached example" _javascript tips

Pure JS code to make the Web clock special effects, need the code farmers can take a look. For everyone to make a reference. <HTML><HEAD> <meta http-equiv=content-type content= "text/html; charset=gb2312 "> <meta content="

HTML5 game engine Ltweenlite implementation of the Super Handsome animation effect (with demo source download) _javascript Tips

This article describes the HTML5 game engine Ltweenlite implementation of the Super handsome animation effect. Share to everyone for your reference, specific as follows: Lufylegend.js is an open source HTML5 game engine, in the game will often have

On the usage _javascript technique of the comma operator in JS

Attention: First, as the current reading of JavaScript technology, so here take JavaScript as an example. You can try it in PHP yourself. Second, JavaScript syntax is more complex, so take JavaScript as an example. The recent re-reading of the Jav

Cross-domain resource sharing CORS detailed _javascript skills

It allows browsers to make requests to cross source servers, XMLHttpRequest overcoming the limitations of Ajax being used only in the same homology. This paper introduces the internal mechanism of cors in detail. (Photo description: Taken in the

JDK Source Code Analysis-integer

Tags: algorithm max math-oat catch analysis print family  Integer is usually one of the most commonly used classes in development, but if you have not studied the source of many features and pits may not know, the following in-depth source to

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