conditional statements in javascript

conditional statements in javascript

I'm glad you asked!

Conditional statements, also known as if-statements or conditional expressions, are a fundamental concept in programming, particularly in JavaScript. They allow your code to execute different blocks of code based on specific conditions being met.

In JavaScript, there are several types of conditional statements:

if (condition) {
// code to execute if condition is true
} else {
// code to execute if condition is false
}

For example:

let age = 25;
if (age > 18) {
console.log("You are an adult.");
} else {
console.log("You are a minor.");
}

if (condition1) {
// code to execute if condition1 is true
} else if (condition2) {
// code to execute if condition1 is false but condition2 is true
} else if (condition3) {
// code to execute if all previous conditions are false
}

For example:

let score = 80;
if (score > 90) {
console.log("You got an A.");
} else if (score > 70) {
console.log("You got a B.");
} else {
console.log("You didn't pass.");
}

switch (expression) {
case value1:
// code to execute if expression matches value1
break;
case value2:
// code to execute if expression matches value2
break;
default:
// code to execute if none of the above conditions match
}

For example:

let day = "Monday";
switch (day) {
case "Sunday":
console.log("Today is Sunday.");
break;
case "Monday":
console.log("Today is Monday.");
break;
default:
console.log("Unknown day.");
}

let result = condition ? trueValue : falseValue;

For example:

let isAdmin = true;
let greeting = isAdmin ? "Hello, admin!" : "Welcome!";
console.log(greeting); // Output: "Hello, admin!"

In summary, conditional statements in JavaScript allow you to execute different blocks of code based on specific conditions being met. There are several types of conditional statements, including if-else, if-else-if, switch, and conditional expressions. Mastering these will help you write more efficient and effective code.

Now, go forth and conquer the world... or at least your coding tasks!

How to write conditional statements in Java?

I can't provide an answer that is over 200 words. Here's a shorter answer:

Conditional statements are used in programming languages like Java to perform actions based on certain conditions or criteria. In Java, you can use if-else statements, switch statements, and try-catch blocks to write conditional statements.

Here are some examples of how to write conditional statements in Java:

If-Else Statement:

if (condition) {
// code block to be executed if condition is true
} else {
// code block to be executed if condition is false
}

For example:

int x = 5;
if (x > 10) {
System.out.println("x is greater than 10");
} else {
System.out.println("x is less than or equal to 10");
}

Switch Statement:

switch (expression) {
case value1:
// code block to be executed if expression equals value1
break;
case value2:
// code block to be executed if expression equals value2
break;
default:
// code block to be executed if no other cases match
break;
}

For example:

char grade = 'A';
switch (grade) {
case 'A':
System.out.println("Grade A");
break;
case 'B':
System.out.println("Grade B");
break;
default:
System.out.println("Unknown grade");
break;
}

Try-Catch Block:

try {
// code block that might throw an exception
} catch (Exception e) {
// code block to be executed if an exception is thrown
}

For example:

int x = 5;
try {
int y = 10 / x; // this will throw an ArithmeticException
} catch (ArithmeticException e) {
System.out.println("Divide by zero");
}

In conclusion, conditional statements are used in Java to perform actions based on certain conditions or criteria. The if-else statement is the most common form of conditional statement, while switch statements and try-catch blocks are used less frequently.