if statement
It's our turn to control the code; now we will set conditions for its execution!
Let's consider the most basic form of conditional statements - the if
statement.
Let's move on to the syntax:
javascript9123if (condition) {// code to be executed if the condition is true}
For example:
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let amIHappy = true;
if (amIHappy) {
console.log('I am so happy!');
}
console.log("It's Monday");
12345let amIHappy = true; if (amIHappy) { console.log('I am so happy!'); } console.log("It's Monday");
That's almost all there is to it, but there's one more thing worth mentioning. Inside the condition
block, there should be a boolean
value. However, we can also place an expression that will result in a boolean
value inside this block, for example:
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let age: number = 22;
if (age >= 21) {
console.log('You can buy alcohol');
}
1234let age: number = 22; if (age >= 21) { console.log('You can buy alcohol'); }
You can change the value of the variable age
to see how the code works depending on that value.
I'll tell you how to set a condition if the first one doesn't work in the next chapter!
Everything was clear?
Thanks for your feedback!
Section 2. Chapter 2
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