April 2010 web platform update

Now available in Safari on iOS

Limited availability

• Array iteration methods: Array iteration methods Learn more.

• Autofocus: The autofocus HTML attribute gives focus to an element on page load. Learn more.

• Canvas text metrics: The fillText() and strokeText() methods draw text to a 2D canvas. The measureText() method measures the width and other metrics which can be used to position the text. Learn more.

• :read-only and :read-write: The :read-only and :read-write CSS pseudo-classes match elements that are read-only or read-write, respectively. For example, :read-only matches <input> and <textarea> elements with the readonly attribute. Learn more.

• tabindex: The tabindex HTML attribute make an element focusable, and defines the element's relative ordering for sequential focus navigation. Learn more.