Bikash Panda

Bikash Panda

1629137535

Detailed Article About JavaScript else if Statement

Detailed Article About JavaScript else if Statement

JavaScript else if and if-else both are conditional statements are used to do different tasks based on a given condition.

Basically, JavaScript has multiple types of conditional statements which we use according to our task at the time of web development. There is 4 type of conditional statement in JavaScript.

Introduction to JavaScript else if Statement

else if Statement mainly executes the block of code when specified if condition returns false.

Syntax of JS else if Statement

if (expression 1) {
Statement(s) to be executed if expression 1 is true
} else if (expression 2) {
Statement(s) to be executed if expression 2 is true and expression 1 is false
} else if (expression 3) {
Statement(s) to be executed if expression 3 is true and expression 2 is false
} else {
Statement(s) to be executed if no expression is true
}

Javascript Conditional Statements

At the time of doing the code, we execute JS conditional statements based on the given conditions.
Here are some of the statements are which we use,

  • If is used to specify the condition, if the condition is true then it executes the block of code specified inside the if block.
  • else is defined with if condition, that executes the block of code when if condition result is false.
  • When we want to use multiple conditions then we use else if condition, which executes the code if the if conditions will return false.
  • At last, there is switch which helps to specify multiple blocks to be executed.

Example of JS else if Statement :

var x = 40;
if (x > 50) {
/* do something */
} else if (x > 5) {
/* do something */
} else {
/* do something */
}

Code Explanation:

  1. In this example, we create a global variable and assign an integer value to it.
  2. On the second line, we set the condition inside the if block, where we check the integer is greater than the given number is or not.
  3. If the condition returns false then it will execute the else if condition.
  4. Else condition executes when no conditional statement is true.

Live Example of Else if and If else Statement in JavaScript

https://codepen.io/phpcodertech/pen/YzVMvyM

In the above example, we create a program to check the language string in if and else if condition.

Where we first define a variable and set the string value. Then we check the language with == double equal operator to check both are equal or not.

If the condition is not satisfied then it goes to else if condition.

As in our example if the statement condition is false and it goes to else if block where it returns true and prints the value on the web page.

I hope you understand all the things, please let me know if you facing any issues.

Also Read: jQuery Signature Pad with saving As Image Using html2canvas

Happy Coding..!

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Lowa Alice

Lowa Alice

1624402800

JavaScript if else (tutorial). DO NOT MISS!!!

JavaScript if else made simple.

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Rahul Jangid

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What is JavaScript - Stackfindover - Blog

Who invented JavaScript, how it works, as we have given information about Programming language in our previous article ( What is PHP ), but today we will talk about what is JavaScript, why JavaScript is used The Answers to all such questions and much other information about JavaScript, you are going to get here today. Hope this information will work for you.

Who invented JavaScript?

JavaScript language was invented by Brendan Eich in 1995. JavaScript is inspired by Java Programming Language. The first name of JavaScript was Mocha which was named by Marc Andreessen, Marc Andreessen is the founder of Netscape and in the same year Mocha was renamed LiveScript, and later in December 1995, it was renamed JavaScript which is still in trend.

What is JavaScript?

JavaScript is a client-side scripting language used with HTML (Hypertext Markup Language). JavaScript is an Interpreted / Oriented language called JS in programming language JavaScript code can be run on any normal web browser. To run the code of JavaScript, we have to enable JavaScript of Web Browser. But some web browsers already have JavaScript enabled.

Today almost all websites are using it as web technology, mind is that there is maximum scope in JavaScript in the coming time, so if you want to become a programmer, then you can be very beneficial to learn JavaScript.

JavaScript Hello World Program

In JavaScript, ‘document.write‘ is used to represent a string on a browser.

<script type="text/javascript">
	document.write("Hello World!");
</script>

How to comment JavaScript code?

  • For single line comment in JavaScript we have to use // (double slashes)
  • For multiple line comments we have to use / * – – * /
<script type="text/javascript">

//single line comment

/* document.write("Hello"); */

</script>

Advantages and Disadvantages of JavaScript

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Niraj Kafle

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The essential JavaScript concepts that you should understand

As a JavaScript developer of any level, you need to understand its foundational concepts and some of the new ideas that help us developing code. In this article, we are going to review 16 basic concepts. So without further ado, let’s get to it.

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JavaScript Control Statement - If Else Explanation in Hindi

This Video is focused on If else implementation in Javascript where we show some message depending on Age of the User. So in this video you will be able to learn Decision making in JavaScript

Checkout this video on youtube

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