Website and marketing terms beginning with J

.je domain

A .je domain is a web address ending in .je, the domain ending associated with Jersey.

Also called: dot je domain, Jersey domain name

JavaScript

JavaScript is a programming language used to add behaviour to websites and other software.

Also called: JS

JavaScript Infinity

JavaScript Infinity is a special numeric value representing infinity. It needs an explicit handling decision if it appears in a feature’s result. Ask the maintainer how unsuitable non-finite values are recognised and review the actual feedback, so the customer is not given a misleading usable quantity or unchanged apparent success.

Also called: Infinity value

JavaScript Map

A JavaScript Map is a collection of key-value pairs that remembers the original insertion order of its keys. Keys can be different kinds of values, including object references. For a Jersey website, define what each key identifies and how entries are updated; a matching key in a collection does not establish customer identity or receiving permission.

Also called: Map collection

JavaScript Set

A JavaScript Set is a collection in which each stored value occurs once, with values available in insertion order. Equality depends on the kind of value; separate objects remain distinct by reference. For a Jersey website, define what the business considers a duplicate before assuming that storing records in a Set removes every repeated customer or product.

Also called: Set collection

JavaScript Symbol

JavaScript Symbol provides unique primitive values that can be used as property keys. Its registry operations have distinct identity behaviour. Ask which role the feature assigns to a symbol and have the maintainer assess the actual representation, rather than give a unique internal key the meaning of verified customer identity or a receiving business reference.

Also called: Symbol value

Jersey data protection

The Data Protection (Jersey) Law 2018 sets rules for how organisations use personal information and gives people rights over it.

Also called: Data Protection (Jersey) Law 2018, JOIC, Jersey GDPR

Jersey GST on online sales

Jersey GST is goods and services tax, which can affect online sales depending on the business and transaction. Registration and charging duties depend on current rules. Check Government of Jersey guidance and suitable tax advice before configuring checkout; do not assume UK VAT settings describe a Jersey sale.

Also called: GST, goods and services tax

Jitter

Jitter describes variation in packet delay across a network flow. It differs from the amount of delay itself and can affect interactive audio or video. Review the actual measurement and use context, rather than treating a single download-rate result as a complete account of connection quality.

JOIC

JOIC is the Jersey Office of the Information Commissioner, the island’s data protection regulator. Its guidance helps organisations understand local duties, rights and registration. It is a separate body from the UK ICO. Use current JOIC guidance for a Jersey business rather than assuming every UK rule applies unchanged.

Also called: Jersey Office of the Information Commissioner

JPEG

JPEG is a raster image format commonly used for photographs with lossy compression. Repeated or strong compression can reduce detail. Compare quality and file size for the actual website image rather than assuming one format is best for every asset.

Also called: JPG

JSON

JSON, or JavaScript Object Notation, is a text format for structured data, including objects, arrays and simple values. Applications commonly use it to exchange information. A Jersey business should agree the fields, their meaning and the receiving checks, because valid JSON syntax does not establish that the business information is correct.

Also called: JavaScript Object Notation

JSON parse

JSON.parse is a JavaScript method that turns JSON text into the value or object described by that text. Invalid JSON syntax raises an error, and an optional reviver can transform the result. For a Jersey website, review the input source, expected fields and receiving checks; a successful parse does not establish trusted, complete or suitable business information.

Also called: JSON.parse()

JSON stringify

JSON.stringify is a JavaScript method that converts a value into JSON text, with optional replacement or property-selection behaviour. Some inputs cannot be represented as expected or can raise errors. For a Jersey website, review the supported value types, included fields and receiving contract; producing a text string does not prove every original detail was preserved or the destination accepted it.

Also called: JSON.stringify()

JSON-LD

JSON-LD is a JSON-based format for representing linked data. Websites can use it to express structured information about visible content. It is one format rather than the whole vocabulary or search feature. Keep the markup accurate and follow the requirements of the actual recipient.

Also called: JSON for Linked Data

JWT

A JSON Web Token carries claims in a defined compact format. Applications must validate the relevant signature, issuer, audience and other required conditions before trusting it. A signed token is not necessarily encrypted, so avoid assuming its contents are private merely because they look encoded.

Also called: JSON Web Token