panchaow

# Copy and self modified from ys.zsh-theme, the one of default themes in master repository
# Clean, simple, compatible and meaningful.
# Tested on Linux, Unix and Windows under ANSI colors.
# It is recommended to use with a dark background and the font Inconsolata.
# Colors: black, red, green, yellow, *blue, magenta, cyan, and white.
# http://xiaofan.at
# 2 Jul 2015 - Xiaofan

# Machine name.
function box_name {

panchaow

// https://reactjs.org/docs/uncontrolled-components.html#the-file-input-tag
class FileInput extends React.Component {
  constructor(props) {
    super(props);
    this.handleSubmit = this.handleSubmit.bind(this);
  }
  handleSubmit(event) {
    event.preventDefault();
    alert(
      `Selected file - ${this.fileInput.files[0].name}`

panchaow

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    // Refs are created using React.createRef().
    // Refs are commonly assigned to an instance property when a component is constructed so they can be referened throughout the component.
    this.myRef = React.createRef(); 
  }
  render() {
    // Refs are attached to React elements via the ref attribute
    return <div ref={this.myRef} />;