if Statement (C) | Microsoft Docs
if ( expression ) statement else statement. In both forms of the if statement, the expressions, which can have any value except a structure, are evaluated, including all side effects.
Conditional (computer programming) - Wikipedia
When an interpreter finds an If, it expects a boolean condition – for example, x > 0, which means "the variable x contains a number that is greater than zero" – and evaluates that condition.
if...else - JavaScript | MDN
This code looks innocent — however, executing checkValue(1, 3) will log "a is not 1". This is because in the case of dangling else, the else clause will be connected to the closest if clause.
Ветвление (программирование) — Википедия
Ветвление в программировании — операция, применяющаяся в случаях, когда выполнение или невыполнение некоторого набора команд должно зависеть от выполнения или невыполнения...
The if-then and if-then-else Statements (The Java™ Tutorials...)
The if-then statement is the most basic of all the control flow statements. It tells your program to execute a certain section of code only if a particular test evaluates to true.
PHP: if - Manual
Any variables defined inside the if block will be available outside the block. Remember that the if doesn't have its own scope. <?php $bool = true; if ($bool) { $hi = 'Hello to all people!'; } echo $hi
C If ... Else Conditions
You can use these conditions to perform different actions for different decisions. C has the following conditional statements: Use if to specify a block of code to be executed, if a specified condition is true.
Conditional branching: if, '?'
In the code above, JavaScript first checks year < 2015 . If that is falsy, it goes to the next condition year > 2015 . If that is also falsy, it shows the last alert . There can be more else if blocks.
Условные инструкции в JavaScript - ИТ Шеф | Инструкция if...else
В этой статье мы изучим условные инструкции if, if...else, switch и тернарный оператор JavaScript, который очень часто используется в выражениях.
Условное ветвление: if, '?'
Инструкция if(...) вычисляет условие в скобках и, если результат true, то выполняет блок кода.