patch

efficient patch operation for matching HTML elements to vnodes

let element = document.createElement('h1')
element.innerText = 'hello world'
document.body.appendChild(element)

patch(element, {
  tag: 'h1',
  props: {},
  content: ['goodbye world']
})

usage

result = patch(elem, node)

Alters elem to match node and returns result.

• elem: the HTMLElement to be patched
• node: a virtual node of the structure { tag, props, content } against which elem is compared

Note that if elem.tagName and node.tag are different, result will be a brand new element. This behavior is caused by a property of the HTMLElement interface that prevents an element's tag from being changed once it is created. If there is a chance of the tag name being altered during runtime, make sure to update your element reference to match result; otherwise, any changes you make to the new element will not be reflected onscreen.