Tencent/omi v4.1.1 on GitHub

[Add] supports tick and nextTick

If observe is used, the view does not change immediately after the data changes. If you want to get the real changed dom, you can use tick or nextTick.

import { render, WeElement, define, tick, nextTick } from 'omi'

define('todo-list', class extends WeElement {
  render(props) {
    return (
      <ul>
        {props.items.map(item => (
          <li key={item.id}>{item.text}</li>
        ))}
      </ul>
    )
  }
})

define('todo-app', class extends WeElement {
  static observe = true

  static get data() {
    return { items: [], text: '' }
  }
  install() {
    tick(() => {
      console.log('tick')
    })

    tick(() => {
      console.log('tick2')
    })
  }

  beforeRender() {
    nextTick(() => {
      console.log('nextTick')
    })

    // don't using tick in beforeRender or beforeUpdate or render or afterUpdate
    // tick(() => {
    //   console.log(Math.random())
    // })
  }

  installed() {
    console.log('installed')
  }

  render() {
    console.log('render')
    return (
      <div>
        <h3>TODO</h3>
        <todo-list items={this.data.items} />
        <form onSubmit={this.handleSubmit}>
          <input
            id="new-todo"
            onChange={this.handleChange}
            value={this.data.text}
          />
          <button>Add #{this.data.items.length + 1}</button>
        </form>
      </div>
    )
  }

  handleChange = e => {
    this.data.text = e.target.value
  }

  handleSubmit = e => {
    e.preventDefault()
    if (!this.data.text.trim().length) {
      return
    }
    this.data.items.push({
      text: this.data.text,
      id: Date.now()
    })
    this.data.text = ''
  }
})

render(<todo-app />, 'body')