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Conditional statements

Statements are considered conditional when they run as long as a certain condition is true. In Javascript the conditional statements are switch case and if statements. The if statements include if, if..else and else statements.

In this section, you will learn about the conditional statements in javascript.

Switch statement​

The switch is a conditional statement that runs through a series of conditions and selects which is true.

Example,

main.js

const currentTutorial = "JavaScript";
switch (currentTutorial) {
   case "html forms": 
      console.log('learning html forms');
      break;
   case "css flexbox":
      console.log('learning css flexbox');
      break;
   default:
      console.log('Yet to begin');
}

The default keyword is used when all the conditions do not meet the expression which is JavaScript.

If statement​

if is another type of conditional statement that runs through a series of conditions and only returns a true value.

To use an if statement with multiple lines of code would involve using else if and else statements.

Example,

main.js

if (2 === 5) {
  console.log(5);
}
else if (2 < 5) {
  console.log(2);
}
else {
  console.log("none of the values");
}

else is used as a default in case none of the conditions is true.