JSON (JavaScript Object Notation) is an open standard file format and data interchange format that uses human-readable text to store and transmit data objects consisting of attribute–value pairs and arrays (or other serializable values). It is a common data format with diverse uses in electronic data interchange, including that of web applications with servers. JSON is a text-based data format following JavaScript object syntax, which was popularized by Douglas Crockford. Even though it closely resembles JavaScript object literal syntax, it can be used independently from JavaScript, and many programming environments feature the ability to read (parse) and generate JSON.
The JSON format is syntactically similar to the code for creating JavaScript objects. Because of this, a JavaScript program can easily convert JSON data into JavaScript objects. Since the format is text only, JSON data can easily be sent between computers, and used by any programming language.
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Over the last 15 years, JSON has become ubiquitous on the web. Today it is the format of choice for almost every publicly available web service, and it is frequently used for private web services as well.
Syntax:
{
“Employee Name”: “Rakesh Mishra”,
“Employee ID”: “STP0023”,
“age”: 27,
“address”: {
“city”: “Bhubaneswar”,
“state”: “Odisha”,
“Mobile Number”: “8787886769”
}
}
Data types
Number: a signed decimal number that may contain a fractional part and may use exponential E notation, but cannot include non-numbers such as NaN. The format makes no distinction between integer and floating-point.
String: a sequence of zero or more Unicode characters. Strings are delimited with double quotation marks and support a backslash escaping syntax.
Boolean: either of the values true or false
Array: an ordered list of zero or more elements, each of which may be of any type. Arrays use square bracket notation with comma-separated elements.
Object: a collection of name–value pairs where the names (also called keys) are strings.
null: an empty value, using the word null
JSON is self-describing. The syntax and hierarchical structure of the JSON strings can in some cases be interpreted by applications that do not already know what data to expect. It has the wide range of supported browser compatibility with the operating systems so the applications made with the coding of JSON doesn’t require much effort to make it all browser compatible.
During development, the developer thinks for the different browsers but JSON provides that functionality. JSON is the best tool for the sharing data of any size even audio, video etc. This is because JSON stores the data in the arrays so data transfer makes easier. For this reason, JSON is a superior file format for web APIs and for web development.
If you’re writing software that communicates with a browser or native mobile application, you should use JSON as the data format. Using a format like XML is an out-of-date choice and a red flag to front-end and mobile talent you’d otherwise like to attract.
