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For College Students

Javascript if else else if - Overview

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In JavaScript, conditionals statements form different forms - if statement, if..else statements, nested if..else statements, if..else..if chain, and switch..case statements.

 

if Statement:

Let's start with the if-statement. The syntax of the if statement in JavaScript is:

if (condition) {
    // code to be executed when the condition holds true
}

 

Example:

var x = 4;
if (x % 2 == 0) {
   console.log("x is even.");
}

 

Output:

"x is even."

 

if-else Statement:

Syntax:
if (condition) {
    // code to be executed when the condition holds true
} else {
    // code to be executed when the condition holds false
}

 

Example:

var x = 5;
if (x % 2 == 0) {
   console.log("x is even.");
} else {
   console.log("x is odd.");
}

 

Output:

"x is odd."

 

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