The ASCII code value is a decimal number string, and "&#" and ";" should be added before and after the number string when used in web pages. For example, the ASCII code of number 0 is 48, and the format used in web pages should be "&#" 48;".
ASCII (American Standard Code for Information Interchange) is a computer coding system based on the Latin alphabet, mainly used to display modern American English, and is equivalent to the international standard ISO/IEC 646. The standard ASCII encoding can represent 128 characters, including uppercase and lowercase Latin letters, Arabic numerals, English punctuation marks, and special control characters used in American English. There is also an extended version of the ASCII code that adds some Western European characters, which can represent 255 characters, but the definitions of the extended characters are inconsistent among Western European countries, and it is not a universal version.
