Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Conditional statements in JavaScript
There are three types of conditional statements in JavaScript −
- If statement − The if statement is used to execute code inside the if block only if the specific condition is met.
- If else statement − The If….Else statement is used to check only two conditions and execute different codes for each of them.
- If else if else statement − The if…else if…else statement is used for checking more than two conditions.
Following is the code to implement conditional statements in JavaScript −
Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.result {
font-size: 20px;
font-weight: 500;
color: blueviolet;
}
</style>
</head>
<body>
<h1>Conditional statements in JavaScript</h1>
<input type="text" class="numInput" />
<button class="Btn">CHECK</button><br />
<div class="result"></div>
<h3>Click on the above button to see if the above number is divisible by 2,3 or both</h3>
<script>
let resEle = document.querySelector(".result");
let BtnEle = document.querySelector(".Btn");
let numInputEle = document.querySelector(".numInput");
BtnEle.addEventListener("click", () => {
if (numInputEle.value % 2 === 0 && numInputEle.value % 3 === 0) {
resEle.innerHTML = "The numbers is divisible by 2 and 3 both";
} else if (numInputEle.value % 3 === 0) {
resEle.innerHTML = "The number is divisbly by 3";
} else if (numInputEle.value % 2 === 0) {
resEle.innerHTML = "The numbers is divisible by 2";
} else {
resEle.innerHTML = "The numbers isn't divisible by 2 or 3";
}
});
</script>
</body>
</html>Output
On entering a number and clicking on ‘CHECK’ button −
Updated on: 20-Jul-2020
1K+ Views
Advertisements