How to perform digital conversion in web front-end

With the rapid development of the Internet, Web front-end technology is becoming more and more important, among which digital conversion is an important component of Web front-end technology. Digital transformation is to make numbers more intuitive and easier to read, making digital information more understandable to users. Below we will introduce the specific content of digital transformation.

1. Base conversion

The way numbers are stored in the computer is not decimal, but binary, so it is extremely important to perform base conversion in the computer. Among them, the most important bases are binary (Base2), octal (Base8), decimal (Base10) and hexadecimal (Base16). These different base numbers are often used in different fields, such as programming, networking, etc. For example, binary is often used in computer research, and hexadecimal color values ​​are commonly used when designing web pages.

So, how to perform hexadecimal conversion in the Web front-end? In fact, it is very simple. We only need to learn the two basic conversion methods of converting decimal to other bases and converting other bases to decimal to achieve base conversion.

1. Convert decimal to binary, octal or hexadecimal

Convert decimal to binary:

(1) Divide by 2 and take the remainder

( 2) Connect the remainders in reverse order

For example: convert the decimal number 12 into a binary number

(1) 12÷2=6...remainder 0

(2 ) 6÷2=3...Yu 0

(3) 3÷2=1...Yu 1

(4) 1÷2=0...Yu 1

Then the decimal number 12 is converted into a binary number: 1100

Convert from decimal to octal:

(1) Divide by 8 and take the remainder

(2) Convert the remainder Connect them in reverse order

For example: Convert the decimal number 19 into an octal number

(1) 19÷8=2…remainder 3

(2) 2÷8=0 ...Remainder 2

Then the decimal number 19 converted to octal is: 23

Decimal to hexadecimal:

(1) Divide by 16 and get the remainder

(2) Convert the remainder to the corresponding letters or numbers

(3) Connect the remainders in reverse order

For example: Convert the decimal number 7331 to hexadecimal Number

(1) 7331÷16=458……Yu 3

(2) 458÷16=28……Yu 12=C

(3) 28÷16 =1...remainder 12=C

(4) 1÷16=0...remainder 1

then the decimal number 7331 converted into hexadecimal number is: 1CCC

2. Convert other base systems to decimal

In fact, it is also very easy to convert other base systems to decimal, just follow the basic formula. Taking the octal system as an example, convert the octal number 5643 into a decimal number:

(1) Multiply each digit by its weight in the number: 5×8³ 6×8² 4×8¹ 3×8⁰

(2) Bitwise sum: 2048 384 32 3=2467

2. Number formatting

Numbers are usually displayed on web pages in different forms, such as currency format with two digits Decimal or date, time format, etc. Therefore, digital formatting is also an important technical point on the Web front-end.

1. Thousands separator

In order to improve the reading experience of numbers, we can add thousands separators between numbers. For example, format the number 1234567.89 as 1,234,567.89, which is easy to read and understand.

Implementation method: Use the toLocaleString() function that comes with JavaScript. For example: console.log(1234567.89.toLocaleString());
Output result: 1,234,567.89

2. Retain the number of decimal places

Retaining the specified number of decimal places often occurs in number formatting operation. For example, rounding the number 3.1415926 to two decimal places gives you 3.14. In the web front-end, we can also use the toFixed() function that comes with JavaScript to implement this function.

Implementation example: console.log(3.1415926.toFixed(2));
Output result: 3.14

3. Percent formatting

Convert a decimal Formatting as a percentage is also a frequently required operation. For example, to convert 0.25 to 25%, we need to use the toPercentavig() function that comes with JavaScript to achieve this.

Implementation example: console.log(0.25.toPrecision(2) * 100 ”%”);
Output result: 25%

3. Summary

Number conversion is a very important technology in the Web front-end. It can make numbers more intuitive, easier to read, and closer to user needs. In digital conversion, hexadecimal conversion and digital formatting are important basic knowledge points and are also technical points that are often used in actual development. I hope this article has been helpful in understanding the digital transformation of web front-ends.

The above is the detailed content of How to perform digital conversion in web front-end. For more information, please follow other related articles on the PHP Chinese website!