The xml-name-validator npm package is used to check if a string is a valid XML name, according to the XML specification. It can validate both XML names and qualified names (QNames), which are used in XML documents to ensure that element and attribute names are compliant with the XML naming rules.

What are xml-name-validator's main functionalities?

Validating XML names

This feature allows you to validate whether a given string is a valid XML name. The `isName` function returns `true` if the string is a valid XML name, and `false` otherwise.

const { isName, isQName } = require('xml-name-validator');

const validName = 'validElement';
const invalidName = '1InvalidElement';

console.log(isName(validName)); // true
console.log(isName(invalidName)); // false

Validating XML qualified names (QNames)

This feature allows you to validate whether a given string is a valid XML qualified name (QName). The `isQName` function returns `true` if the string is a valid QName, which includes a namespace prefix, and `false` otherwise.

const { isName, isQName } = require('xml-name-validator');

const validQName = 'ns:validElement';
const invalidQName = 'ns:1InvalidElement';

console.log(isQName(validQName)); // true
console.log(isQName(invalidQName)); // false

Other packages similar to xml-name-validator

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Validate XML Names and Qualified Names

This package simply tells you whether or not a string matches the Name or QName productions in the XML Namespaces specification. We use it for implementing the validate algorithm in jsdom, but you can use it for whatever you want.

Usage

This package's main module exports two functions, name() and qname(). Both take a string and return a boolean indicating whether or not the string matches the relevant production.

"use strict":
const xnv = require("xml-name-validator");

// Will return true
xnv.name("x");
xnv.name(":");
xnv.name("a:0");
xnv.name("a:b:c");

// Will return false
xnv.name("\\");
xnv.name("'");
xnv.name("0");
xnv.name("a!");

// Will return true
xnv.qname("x");
xnv.qname("a0");
xnv.qname("a:b");

// Will return false
xnv.qname(":a");
xnv.qname(":b");
xnv.qname("a:b:c");
xnv.qname("a:0");

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Last updated on 12 Nov 2023

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