if else statement

In writing a shell script, there may be a situation when you need to take a path of two paths. So, you need to use conditional statements to make the program make the right decisions and perform the right actions. The UNIX shell supports conditional

Definition:So that multiple objects have the opportunity to process the request, thus avoiding the coupling relationship between the request sender and the receiver. Connect these objects into a chain and pass the request along the chain until an

PHP process control and php processPHP-if statement If statement is usedRun the Code only when the specified condition is set.. Syntax If (condition) {code to be executed when the condition is set ;} If the current time is less than 20, the

Before you introduce the "if" statement, know that the "if" statement is to meet the expression when the execution of a PHP statement, when the condition is not satisfied, is not executed, but, in most cases, always meet the conditions when the

Control statements In the example of PHP code we saw earlier, either there was only one single output text statement to the Web page, or a series of statements executed sequentially. If you have written programs in other languages, you should know

C # if, ifelse statement, 1. The if statement is determined based on the value of the Boolean expression. The if statement can be either of the following methods: Code(1)if(boolean) do (2)if(boolean){ do} Generally, the second method is used,

First, IntroductionJavaScript is one of the most popular programming languages in the world, and the language is used primarily for HTML and WEB.JavaScript is a scripting language, a lightweight language, programming code that can insert HTML pages,

JavaScript functionsA function is an event-driven or reusable block of code that executes when it is invoked.JavaScript function syntaxA function is a block of code wrapped in curly braces, preceded by a keyword function:When the function is called,

JavaScript If ... Else statementconditional statements are used to perform different actions based on different conditions. conditional statementsOften when writing code, you always need to perform different actions for different decisions. You can

condition | operation Executes one of two statements according to a condition. test ? Statement 1 : statement2 Parameters Test Any Boolean expression. Statement 1 The statement to execute when test is true . Can be a compound statement

JavaScript is becoming more and more popular. It can be said that it is one of the most prominent languages on the Internet. You can use it across platforms and Browsers without rejecting backend languages. There are many different development

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

How does php determine whether to add to favorites? You have created an information favorites function,On the information details page, there are hidden title, url, and other information. as long as you press the Submit button, the system will

PHP process control and php process. PHP process control. The php-if statement of the PHP process is used to execute code only when the specified condition is set. Syntax if (condition) {code to be executed when the condition is set;} if the current

Some of the selection statements in JavaScript: 1, if statement the code that executes the condition when the specified condition is true. 2, If...else ... Statement executes the code when the statement specifies that the condition is true, and

Compound assignment operator operator symbols Addition += Bitwise AND &= by bit or |= Per-bitwise XOR OR ^= Division /= Move left

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

Projects often encounter the ability to retrieve the password, and now find the password is generally used to receive authentication code, in order to prevent multiple transmission, the general need to set a send interval, such as 60 seconds. In

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

Condition Statement When writing code, you often need to perform different actions for different judgments. You can use conditional statements in the code to complete this task. If... else statement Execute one piece of code when the conditions are