Course Elementary  10505

Course Introduction："JavaScript Basic Grammar and Basic Statements Video Tutorial" This course was recorded by Beifeng.com. JavaScript is a literal scripting language. It is a dynamically typed, weakly typed, prototype-based language with built-in support for types. Its interpreter is called the JavaScript engine, which is part of the browser and is widely used in client-side scripting languages. It was first used on HTML (an application under Standard Universal Markup Language) web pages to add dynamic functions to HTML web pages. .

Course Intermediate  11242

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17578

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Introduction：sql statement: sql statement PHP batch delete sql statement: First of all, you must understand the sql statement $SQL="delete from `jb51` where id in (1,2,4)"; The form is probably: Copy the code The code is as follows: <form action= "" method="post"> <input name="ID_Dele[]" type="checkbox" id="ID_Dele[]" value="1"/> <input name="

2016-07-29 comment 0  1199

Course Introduction：The functions of the continue statement in the loop statement are: 1. End this loop, and subsequent statements in the loop body will not be executed; 2. Continue to judge the loop condition and execute the next statement in the loop body. The continue statement can only be used in a while statement, for statement or foreach statement.

2020-07-03 comment 0  29071

Course Introduction：SQL statement optimization principles, sql statement optimization. SQL statement optimization principles, sql statement optimization methods to improve query speed when processing data of more than one million levels: 1. Try to avoid using != or operators in the where clause, otherwise the engine will give up.

2016-07-13 comment 0  772

Course Introduction：select statement: select statement php mssql paging SQL statement optimization continuous impact: copy the code code as follows: <?php /** * @Filename: page.sql.class.php * @CreatTime: 2009-01-06 * @Descrition: this The class is a SQL statement processing class. * @UpdateTime-1 :null * @Version :jswweb1.0.0 * @Author :fkedwgwy * @Dome : $sql//SQL statement $all

2016-07-29 comment 0  848

Course Introduction：This article introduces the switch statement and loop statement with examples from the java zero-based introduction column. I hope it can help students who are learning java. The switch statement is used to determine whether a variable is equal to a value in a series of values. Each value is called a branch.

2019-12-16 comment 0  2571