Detailed introduction to website data

XmlHttp code case analysis for asynchronously obtaining website data var oDiv var xh function getXML() { oDiv = document.all.m oDiv.innerHTML = "Loading column data, please wait..." oDiv.style.display= "" xh = new ActiveXObject("Microsoft.XMLHTTP") xh.onreadystatechange = getReady xh.open("GET",a.value,true) xh.send()

1. XmlHttp code case analysis for asynchronously obtaining website data

Introduction: This article describes the code case analysis of XmlHttp asynchronously obtaining website data. Friends in need can refer to the following

2. MySql installation and use graphic tutorial

Introduction: MySQL is a relational database management system developed by the Swedish MySQL AB company and currently belongs to Oracle Corporation. MySQL is a relational database management system. A relational database stores data in different tables instead of putting all data in one large warehouse, which increases speed and flexibility. The SQL language used by MySQL is the most commonly used standardized language for accessing databases. MySQL software adopts a dual authorization policy (this entry "Authorization Policy"), which is divided into community version and commercial version. Due to its small size, fast speed and low total cost of ownership, especially the characteristics of open source, it is generally used by small and medium-sized enterprises. For website development, MySQL is chosen as the website database. Thanks to its community

3. mysql8.0 is coming

Introduction: MySQL is an open source small relational database management system developed by the Swedish MySQL AB company. Currently, MySQL is widely used in small and medium-sized websites on the Internet. Due to its small size, fast speed, low total cost of ownership, and especially the characteristics of open source, many small and medium-sized websites choose MySQL as their website database in order to reduce the total cost of website ownership.

4. Comparison of cases using triggers in Oracle and triggers in mysql

Introduction: MySQL is an open source small relational database management system, developed by the Swedish MySQL AB company. MySQL is widely used in small and medium-sized websites on the Internet. Due to its small size, fast speed, low total cost of ownership, and especially the characteristics of open source, many small and medium-sized websites choose MySQL as their website database in order to reduce the total cost of website ownership.

5. mysql add, delete, modify - CURD operation

Introduction: As a web programmer, everyone knows that data is indispensable for any website, so what is the data used for? Data is used to display website data in real time. Since it is data, something to store data is indispensable, and programmers know that mysql is used a lot. Mysql is now acquired by Oracle.

6. MySQL extension function for front-end learning PHP

Introduction: Due to its small size, fast speed, and low total cost of ownership, mysql is especially open source. Many small and medium-sized websites choose mysql as their website database in order to reduce the total cost of website ownership. Database system solutions that combine the mysql database management system with the php script language are being adopted by more and more websites, among which the LAMP (linux+apche+mysql+php) mode is the most popular

7. How to design database with cosine similarity algorithm

Introduction: There are many articles in the website database, all of which are tagged with relevant tags , when the user registers, the user will be asked to select a favorite tag, and then use the cosine similarity algorithm to calculate and recommend it to him on the homepage, but this will be recalculated every time he visits. How should I design a database to save it to the user...

8. Parsing the encrypted js

Introduction:: Parsing the encrypted js: Try to catch it today Taking the data of a website, I found that the website has added cookie restrictions. It takes three visits to the browser to access the homepage. The first visit will modify the local cookie through js, and then js (encrypted -_-!) will refresh the page. With the updated cookie, the cookie is changed again in the header information returned by the second visit, and a 302 redirect is performed. The website data is finally accessed on the third visit. Damn it, it’s so troublesome to grab a website. 1. Analyze, for the first visit, the js is encrypted. You need to solve the encryption problem first, using php

9. How to prevent sql injection into PHP code websites Sharing of suggestions for SQL injection vulnerability attacks

Introduction: Preventing sql injection: Preventing sql injection into PHP code websites How to prevent SQL injection vulnerability attacks Suggestions for sharing: Hackers can obtain it through SQL injection attacks After that, they can obtain all the data in the website database. Malicious hackers can use the SQL injection function to tamper with the data in the database and even destroy the data in the database. As a web developer, you hate this kind of hacker behavior. Of course, it is necessary to understand the principles of SQL injection and learn how to protect your website database through code. Today, I will use PHP and MySQL databases as examples to share what I know about SQL injection attacks and some simple preventive measures.

10. Use nginx lua to implement website statistics Data collection

Introduction:: Use nginx lua to realize data collection in website statistics: Introduction Website data statistical analysis tool is a tool often used by webmasters and operators A variety of tools, commonly used ones include Google Analytics, Baidu Statistics, Tencent Analytics, etc. The first step in all these statistical analysis tools is the collection of website visit data. The current mainstream data collection methods are basically based on JavaScript. Here we briefly analyze the principles of data collection, and follow the steps to lead everyone to build an actual data collection system. Data collection principle analysis To put it simply, the website statistical analysis tool needs to collect the behavior of users browsing the target website (such as opening a certain web page, clicking a certain button

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