 1667980260

# Binary to Decimal Conversion in JavaScript

In order to convert from binary to decimal, you need to know the value of each digit. In binary, each digit has a value of 2 raised to the power of the position of the digit in the number. For example, the number 1001 would be equal to:

1 * 2^3 = 8

0 * 2^2 = 0

0 * 2^1 = 0

1 * 2^0 = 1

8 + 0 + 0 + 1 = 9

Decimal to Binary Conversion

In order to convert from decimal to binary, you need to know the value of each digit. In decimal, each digit has a value of 10 raised to the power of the position of the digit in the number. For example, the number 9 would be equal to:

9 * 10^0 = 9

Just like binary, once you calculate all the values, you simply add them together to get the final number. So for this example, 9 would be 1001 in binary.

Converting Between Other Bases

Converting between other bases works in a similar way to converting between binary and decimal. In order to convert from another base to binary, you would use the base raised to the power of the position of the digit in the number. In order to convert from binary to another base, you would use the position of the digit in the number raised to the power of the base.

Here are some examples of converting between binary and other bases:

In binary, 4 bits make a nibble and 8 bits make a byte. In hexadecimal, 8 bits make a byte. In order to convert between binary and hexadecimal, you can convert binary to decimal and then use the toString method to convert the number to another base. For example, here is how you would convert the number 10010001 from binary to hexadecimal:

10010001 = 1 * 2^7 + 0 * 2^6 + 0 * 2^5 + 1 * 2^4 + 0 * 2^3 + 0 * 2^2 + 0 * 2^1 + 1 * 2^0 = 129

129.toString(16) = 81

To convert from hexadecimal to binary, you can convert hexadecimal to decimal and then use the toString method to convert the number to another base. For example, here is how you would convert 81 from hexadecimal to binary:

81 = 8 * 16^1 + 1 * 16^0 = 128 + 1 = 129

129.toString(2) = 10000001

Binary to Octal

In octal, 3 bits make a digit and 8 bits make a byte. In order to convert between binary and octal, you can convert binary to decimal and then use the toString method to convert the number to another base. For example, here is how you would convert the number 10100010 from binary to decimal:

10100010 = 1 * 2^7 + 0 * 2^6 + 1 * 2^5 + 0 * 2^4 + 0 * 2^3 + 0 * 2^2 + 1 * 2^1 + 0 * 2^0 = 162

162.toString(8) = 242

Octal to Binary

To convert from octal to binary, you can convert octal to decimal and then use the toString method to convert the number to another base. For example, here is how you would convert 242 from octal to binary:

242 = 2 * 8^2 + 4 * 8^1 + 2 * 8^0 = 192 + 32 + 2 = 226

226.toString(2) = 11100110

Binary to Base64

Base64 is a subset of the ASCII character set. In binary, 6 bits make a base64 character and 8 bits make a byte. In order to convert between binary and base64, you can convert binary to decimal and then use the toString method to convert the number to another base. For example, here is how you would convert the number 01001000 from binary to base64:

01001000 = 0 * 2^7 + 1 * 2^6 + 0 * 2^5 + 0 * 2^4 + 1 * 2^3 + 0 * 2^2 + 0 * 2^1 + 0 * 2^0 = 72

72.toString(64) = H

Base64 to Binary

To convert from base64 to binary, you can convert base64 to decimal and then use the toString method to convert the number to another base. For example, here is how you would convert H from base64 to binary:

H = 8 * 64^0 = 8

8.toString(2) = 1000

You can also convert between binary and other bases using the parseInt method. For example, to convert from binary to hexadecimal you can use:

parseInt('10010001', 2).toString(16) = 81

To convert from hexadecimal to binary you can use:

parseInt('81', 16).toString(2) = 10000001

Converting Between Binary, Decimal and Hexadecimal

It is common to need to convert between binary, decimal and hexadecimal. You can do this using JavaScript. For example, to convert from binary to decimal and then to hexadecimal, you can use:

parseInt('10010001', 2).toString(16) = 81

To convert from decimal to binary and then to hexadecimal, you can use:

129.toString(16) = 81

To convert from hexadecimal to decimal and then to binary, you can use:

parseInt('81', 16).toString(2) = 10000001

Converting Between Binary, Decimal and Octal

It is common to need to convert between binary, decimal and octal. You can do this using JavaScript. For example, to convert from binary to decimal and then to octal, you can use:

parseInt('10010001', 2).toString(8) = 201

To convert from decimal to binary and then to octal, you can use:

129.toString(8) = 201

To convert from octal to decimal and then to binary, you can use:

parseInt('201', 8).toString(2) = 10010001

Converting Between Binary, Decimal and Base64

It is common to need to convert between binary, decimal and base64. You can do this using JavaScript. For example, to convert from binary to decimal and then to base64, you can use:

parseInt('01001000', 2).toString(64) = H

To convert from decimal to binary and then to base64, you can use:

72.toString(64) = H

To convert from base64 to decimal and then to binary, you can use:

parseInt('H', 64).toString(2) = 01001000

Converting Between Binary, Hexadecimal and Octal

It is common to need to convert between binary, hexadecimal and octal. You can do this using JavaScript. For example, to convert from binary to hexadecimal and then to octal, you can use:

parseInt('10010001', 2).toString(8) = 201

To convert from hexadecimal to binary and then to octal, you can use:

parseInt('81', 16).toString(8) = 201

To convert from octal to binary and then to hexadecimal, you can use:

parseInt('201', 8).toString(16) = 81

Converting Between Binary, Hexadecimal and Base64

It is common to need to convert between binary, hexadecimal and base64. You can do this using JavaScript. For example, to convert from binary to hexadecimal and then to base64, you can use:

parseInt('01001000', 2).toString(64) = H

To convert from hexadecimal to binary and then to base64, you can use:

parseInt('48', 16).toString(64) = H

To convert from base64 to binary and then to hexadecimal, you can use:

parseInt('H', 64).toString(16) = 48

Converting Between Binary, Octal and Base64

It is common to need to convert between binary, octal and base64. You can do this using JavaScript. For example, to convert from binary to octal and then to base64, you can use:

parseInt('01001000', 2).toString(64) = H

To convert from octal to binary and then to base64, you can use:

parseInt('72', 8).toString(64) = H

To convert from base64 to binary and then to octal, you can use:

parseInt('H', 64).toString(8) = 72

Converting Between Decimal, Hexadecimal and Octal

It is common to need to convert between decimal, hexadecimal and octal. You can do this using JavaScript. For example, to convert from decimal to hexadecimal and then to octal, you can use:

129.toString(8) = 201

To convert from hexadecimal to decimal and then to octal, you can use:

parseInt('81', 16).toString(8) = 201

To convert from octal to decimal and then to hexadecimal, you can use:

201.toString(16) = 81

Converting Between Decimal, Hexadecimal and Base64

It is common to need to convert between decimal, hexadecimal and base64. You can do this using JavaScript. For example, to convert from decimal to hexadecimal and then to base64, you can use:

129.toString(64) = H

To convert from hexadecimal to decimal and then to base64, you can use:

parseInt('81', 16).toString(64) = H

To convert from base64 to decimal and then to hexadecimal, you can use:

parseInt('H', 64).toString(16) = 81

Converting Between Decimal, Octal and Base64

It is common to need to convert between decimal, octal and base64. You can do this using JavaScript. For example, to convert from decimal to octal and then to base64, you can use:

129.toString(64) = H

To convert from octal to decimal and then to base64, you can use:

201.toString(64) = H

To convert from base64 to decimal and then to octal, you can use:

parseInt('H', 64).toString(8) = 201

Converting Between Hexadecimal, Octal and Base64

It is common to need to convert between hexadecimal, octal and base64. You can do this using JavaScript. For example, to convert from hexadecimal to octal and then to base64, you can use:

parseInt('81', 16).toString(64) = H

To convert from octal to hexadecimal and then to base64, you can use:

201.toString(64) = H

To convert from base64 to hexadecimal and then to octal, you can use:

parseInt('H', 64).toString(16) = 81

Converting Between Octal and Base64

JavaScript provides a built-in method to convert a binary number into decimal number by using the parseInt() method.

The parseInt() method takes two parameters. The first parameter is a string which represents the binary number and the second parameter is a number which represents the base.

For binary to decimal conversion, the base should be 2.

See the following example.

Live Demo

<html> <body> <script type="text/javascript"> document.write(parseInt("11011", 2)); //27 </script> </body> </html>

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## JavaScript compound assignment operators

JavaScript is unarguablly one of the most common things you’ll learn when you start programming for the web. Here’s a small post on JavaScript compound assignment operators and how we use them.

The compound assignment operators consist of a binary operator and the simple assignment operator.

The binary operators, work with two operands. For example a+b where + is the operator and the a, b are operands. Simple assignment operator is used to assign values to a variable(s).

It’s quite common to modify values stored in variables. To make this process a little quicker, we use compound assignment operators.

They are:

• +=
• -+
• *=
• /=

You can also check my video tutorial compound assignment operators.

Let’s consider an example. Suppose price = 5 and we want to add ten more to it.

var price = 5;
price = price + 10;

We added ten to price. Look at the repetitive price variable. We could easily use a compound += to reduce this. We do this instead.

price += 5;

Awesome. Isn’t it? What’s the value of price now? Practice and comment below. If you don’t know how to practice check these lessons.

Lets bring down the price by 5 again and display it.
We use console.log command to display what is stored in the variable. It is very help for debugging.
Debugging let’s you find errors or bugs in your code. More on this later.

price -= 5;
console.log(price);

Lets multiply price and show it.

price *=5;
console.log(price);

and finally we will divide it.

price /=5;
console.log(price);

If you have any doubts, comment below.

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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>
``````

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