how to use if condition in html

Conditional statements are used to perform different actions based on different conditions. Conditional statement Usually when writing code, you always need to perform different actions for different decisions. You can use conditional statements

Analysis of Index Condition Pushdown (under the ICP Index Condition) and Multi-Range Read (MRR Index Multi-Range lookup) query optimization in MySQL,   Source: http://www.cnblogs.com/wy123/p/7374078.html(The Source retained is not the right of

IE condition comment judgment statement in HTML ( ), xxendif is a special syntax provided by IE, which is ignored by other browsers as annotations. Purpose: load the corresponding CSS or JS files according to different IE versions, as shown in the

MYSQL5.6.7-RC index condition pushdown indexed condition Push code interpretationHttp://jishu.zol.com.cn/4505.htmlMYSQL5.6.7-RC Index Condition pushdown code interpretation a-a+2013-08-07 11:10|Share to:Interested in the index condition Pushdown,

#!/bin/shPs-fe|grep processstring |grep-v grepIf [$?-ne 0]Thenecho "START process ..."Elseecho "Runing ..."Fi#####Processstring represents a process feature string that can be queried for a unique process's characteristic string0 indicates the

HTML condition comments and html comments The common HTML comment format is IE5 ~ IE9 also supports a specialIf condition comment(It seems a bit similar to the syntax structure during template rendering) html statement In this way, the hack code

Turn from: http://www.importnew.com/9281.html In the Java.util.concurrent package, there are two very special tool classes, condition and Reentrantlock, which are known to people who have been used, and reentrantlock (reentrant locks) are

Today, when adding some code functions to the website, we need to use the if condition judgment, and we find that the shorthand method is forgotten. Here we specially sort out the condition statements to execute different actions based on different

Implementation of Atitit. List page and condition query best practices (1) ------ set query conditions and submit query and return json data, atititjson Implementation of Atitit. List page and condition query best practices (1) ------ set query

SELECT * FROM TdLeft JOIN (Select case_id as SUP_CASE_ID, COUNT (*) Supervise_number fromTd_kcdc_case_sup_infoGROUP BY case_id) SUPOnsup.sup_case_id = td.case_idwhere 1=1/* cannot be removed, otherwise the condition after and is considered to be the