paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

tlrobinson

// give it a name so it reuses the same window
var win = window.open(null, "redux-devtools", "menubar=no,location=no,resizable=yes,scrollbars=no,status=no");

// reload in case it's reusing the same window with the old content
win.location.reload();

// wait a little bit for it to reload, then render
setTimeout(function() {
    React.render(
        <DebugPanel top right bottom left >

ryanflorence

class Profile extends React.Component {
  // etc.
}

function createContainer (Component) {
  return class extends React.Component {
    render () {
      return <Component {...this.props}/>
    }
  }