isabella232 / jsonml.js

JsonML-related tools for losslessly converting between XML/HTML and JSON, including mixed-mode XML. http://jsonml.org

jsonml.js

JsonML-related tools.

Forked Library

Forked from benjycui/jsonml.js since it is used by many Condé Nast applications but is not actively supported. Fork created by pgoldrbx.

We are extremely grateful for the original work Stephen M. McKamey, and the adaptation for node by benjycui.

Maintainers

• Phil Gold (@pgoldrbx / [email protected])

Install

npm install --save @condenast/jsonml.js

Usage

// To import all the tools
const JsonML = require('@condenast/jsonml.js');

// Only import utils
const JsonML = require('@condenast/jsonml.js/dist/utils');

API

Types

• JsonML {string|Array} - a JsonML node or value NOTE: this type is used for documentation only and is not exported by the module.

DOM

const { dom } = require('@condenast/jsonml.js');

fromHTML( elem, filter)

Create JsonML tree from DOM, given a root DOM Element.

• @param {Element} elem - DOM Element
• @param {Function} filter - optional method to apply on every created JsonML node The filter method is called with the signature: filter( jml, elem ) => jml
• @returns {JsonML} a JsonML node

fromHTMLText( string: html, Function: filter)

Create JsonML tree from HTML string.

• @param {string} html - HTML string
• @param {Function} filter - optional method to apply on every created JsonML node The filter method is called with the signature: filter( jml, elem ) => jml
• @returns {JsonML} a JsonML node

---

HTML

const { html } = require('@condenast/jsonml.js');

toHTML( jml, filter )

Generate an HTML DOM tree given a JsonML structure. An optional filter method can be passed and will be applied to each node.

• @param {string|Array} jml - JsonML structure
• @param {Function} [filter] - optional method applied to each node during render The filter method is called with the signature: filter( elem ) => elem
• @returns {Element} DOM Element

toHTMLText( jml, filter )

Generate an HTML string given a JsonML structure. An optional filter method can be passed and will be applied to each node.

Warning: Not current efficient

• @param {string|Array} jml - JsonML structure
• @param {Function} [filter] - optional method applied to each node during render The filter method is called with the signature: filter( elem ) => elem
• @returns {string} HTML text

raw( value ) : Markup

Create a new Markup instance wrapping the given value.

• @param {string} value - markup text value
• @returns {Markup} instance of Markup wrapper containing the given value

isRaw( value )

Determines if a given value is a Markup instance wrapping a string value.

• @param {any} value - any value to evaluate
• @returns {boolean} true if an instance of Markup (a "raw" node)

onerror( ex )

• @param {Error} exception

NOTE: This export is null by default. The onerror property is exported as a placeholder to be overridden with a custom error handler if desired.

Example:

html.onerror = ex => console.error(ex);

patch(elem, jml, filter)

Update an existing DOM node from JsonML.

This method can be used to append attributes or elements but not remove either. Nor can it be used to modify the tagName of the selected element. It also cannot be used to modify the content of a text node.

• @param {Element} elem - DOM Element
• @param {any} jml
• @param {Function} filter The filter method is called with the signature: filter( elem ) => elem
• @returns {Element} DOM element

Example

<div id="my-el"></div>

const elem = document.getElementById('my-el');
html.patch(elem, ['div', { class: 'foo' }, ['span', 'hello']]);

<div class="foo" id="my-el">
  <span>hello</span>
</div>

---

Utils

const { utils } = require('@condenast/jsonml.js');

Working with JsonML Nodes

appendChild( parent, child )

Append a child JsonML node to a given parent node

• @param {JsonML} parent - JsonML node
• @param {JsonML} child - JsonML content to be appended to the parent node

getChildren( jml )

Get all child JsonML nodes of a given node

• @param {JsonML} jml - JsonML node
• @returns {JsonML[]} child nodes

getTagName( jml )

Get the tag name of a JsonML node

• @param {JsonML} jml - JsonML node
• @returns {string} tag name

isAttributes( jml )

Determine if an object is a JsonML attributes object

• @param {JsonML} jml - JsonML node
• @returns {boolean} true if a JsonML attribute object

isElement( jml )

Identify a valid JsonML node

• @param {JsonML} jml - JsonML node
• @returns {boolean} true if a valid JsonML node or string value

isFragment( jml )

Identify a JsonML fragment without any tag or type

• @param {JsonML} jml - JsonML node
• @returns {boolean} true if JsonML fragment (node without a tag name)

isMarkup( value )

Identify a raw Markup element

• @param {any} value - value to test
• @returns {boolean} true if representing a raw Markup element

Working with JsonML Attributes

addAttributes( jml, attr )

Adds attributes to a JsonML node

• @param {JsonML} jml - JsonML node
• @param {Object} attr - attributes

getAttribute( jml, string: key )

Get an attribute value from a JsonML node, given an attribute name.

• @param {JsonML} jml - JsonML node
• @param {string} key - attribute name
• @returns {any} value

getAttributes( jml, boolean: addIfMissing )

Get all attributes for a given JsonML node

• @param {JsonML} jml - JsonML node
• @param {boolean} addIfMissing - when true, an empty attributes object will be initialized on the node if none exists
• @returns {Object} attributes

hasAttributes( jml )

Determine if a JsonML node has attributes

• @param {JsonML} jml - JsonML node
• @returns {boolean} true if the node has attributes

setAttribute( jml, key, value )

• @param {JsonML} jml - JsonML node
• @param {string} key - attribute name
• @param {any} value - attribute value

XML

const { xml } = require('@condenast/jsonml.js');

fromXML( elem, filter )

Converts XML nodes to JsonML

• @param {Element} elem - XML DOM node
• @param {Function} filter - optional method to apply on every created JsonML node The filter method is called with the signature: filter( jml, elem ) => jml
• @returns {JsonML|null} a JsonML node

fromXMLText( xmlText, filter )

Converts XML text to JsonML

• @param {string} xmlText - XML text
• @param {Function} filter - optional method to apply on every created JsonML node The filter method is called with the signature: filter( jml, elem ) => jml
• @returns {JsonML|null} a JsonML node

isXML( value )

• @param {any} value - Input value to test
• @returns {boolean} true if an XML DOM node

parseXML( xmlText )

Converts XML text to XML DOM nodes

• @param {string} xmlText - XML text
• @returns {XMLDocument} xml document

renderXML( elem )

Converts XML DOM nodes to XML text

• @param {Element} elem - XML DOM node
• @returns {string} XML string

toXML( jml, filter )

• @param {JsonML} jml - JsonML structure
• @param {Function} filter - optional method applied to each node during render The filter method is called with the signature: filter( elem ) => elem
• @returns {Element} XML DOM Element

toXMLText( jml, filter )

Converts JsonML to XML text

• @param {JsonML} jml - JsonML structure
• @param {Function} filter - optional method applied to each node during render The filter method is called with the signature: filter( elem ) => elem
• @returns {string} XML string

---

License

MIT