dom-components

npm install @mojule/dom-components

A way to turn nested components backed by your own templates into DOM nodes

HTML syntax

<!-- model as attributes -->
<m-box name="foo">
  <m-box>
    <!-- model as embedded JSON -->
    <m-model>{ "name": "bar" }</m-model>
    <p class="baz">Hello world</p>
  </m-box>
</m-box>

JSON syntax

[ "Box", { "name": "foo" },
  [ "Box", { "name": "bar" },
    [ "p", { "class": "baz" },
      "Hello world"
    ]
  ]
]

The custom elements will be mapped via supplied template functions with a model and any child nodes

Custom elements start with m- - the m- will be stripped and the remainder of the name will be converted to PascalCase, eg m-foo-bar refers to a template called FooBar

Attributes on m- elements will become properties on a model passed to the template function and have their names converted from kebab-case to camelCase, eg <m-foo bar-baz="qux"> will call provided template Foo with the model { "barBaz": "qux" }

For complex models, embed the JSON for the model directly inside an immediate child node with the tag <m-model>, eg <m-foo><m-model>{ "bar": "baz" }</m-model></m-foo>

The JSON syntax is [ name[, model ], ...children ], where name is a template or tag name, model is the template model or attribute map for the DOM element, and children is 0 or more nodes in the same format

Text nodes are just strings

Some special JSON nodes are also supported:

[ "documentFragment",
  [ "comment", "foo" ],
  "text node is just a string"
]

const DomComponents = require( '@mojule/dom-components' )

const templates = {
  Box: ( model, ...childNodes ) => {
    const box = document.createElement( 'div' )
    box.classList.add( 'box' )
    box.setAttribute( name, model.name )

    childNodes.forEach( child => box.appendChild( child ) )

    return box
  }
}

// document can be window.document, a JSDOM document etc
const toDom = DomComponents( document, templates )

// call toDom with either a DOM node following the convention above or JSON
document.body.appendChild( toDom( componentNode ) )
document.body.appendChild( toDom( json ) )

<div class="box" name="foo">
  <div class="box" name="bar">
    <p class="baz">Hello World</p>
  </div>
</div>