XmlHttpRequest is an awesome innovation from the point of view of the software development community as a whole.
But from a Microsoft shareholder's point of view it was a disaster. XmlHttpRequest and ContentEditableDiv (known back then as DesignMode) ushered in Web 2.0 and Web 2.0 ended Microsoft's dominance of the software industry by making Windows irrelevant.
But from a Microsoft shareholder's point of view it was a disaster. XmlHttpRequest and ContentEditableDiv (known back then as DesignMode) ushered in Web 2.0 and Web 2.0 ended Microsoft's dominance of the software industry by making Windows irrelevant.