6/22/2023 0 Comments Javascript conditional![]() Given that x 6 and y 3, the table below explains the logical operators: Conditional (Ternary) Operator JavaScript also contains a conditional operator that assigns a value to a variable based on some condition. JavaScript supports the following forms of if.else statement if statement if. JavaScript programs are no different, but given the fact. Flow Chart of if-else The following flow chart shows how the if-else statement works. At the heart of most useful programs, we have to make decisions based on input. ![]() Here we will explain the if.else statement. It's the only one JavaScript currently has, though. Logical operators are used to determine the logic between variables or values. In another case, if you have only if condition you can use & operator as: condition & action For instance:ttings & (ttings new TableSettings()) FYI: You have to try to avoid using if-else or at least decrease using it and try to replace it with Polymorphism or Inheritance. JavaScript supports conditional statements which are used to perform different actions based on different conditions. They can even be chained: serveDrink(userIsYoungerThan4 ? 'Milk' : userIsYoungerThan21 ? 'Grape Juice' : 'Wine') īe careful, though, or you will end up with convoluted code like this: var k = a ? (b ? (c ? d : e) : (d ? e : f)) : f ? (g ? h : i) : j ġ Often called "the ternary operator," but in fact it's just a ternary operator. Like all expressions, the conditional operator can also be used as a standalone statement with side-effects, though this is unusual outside of minification: userIsYoungerThan21 ? serveGrapeJuice() : serveWine() If the resulting value is true, the given statement(s) in the if block, are executed. ![]() A conditional statement is designed to work independently irrespective. ServeDrink(userIsYoungerThan21 ? "Grape Juice" : "Wine") A conditional statement is also used to maintain data flow or program flow in javascript. This can be shortened with the ?: like so: var userType = userIsYoungerThan18 ? "Minor" : "Adult" ![]() Here is an example of code that could be shortened with the conditional operator: var userType This is a one-line shorthand for an if-else statement.
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