js之获取窗口大小和位置信息

除IE外的浏览器查看窗口大小和位置信息：

//The overall size of the browser window on the desktop

var windowWidth = window.outerwidth;

var windowHeight = window.outerHeight;

//This is the position of the browser window on the desktop

var windowX = window.screenX;

var windowY = window.screenY;

//The size of the viewport in which the HTML document is displayed

//This is the window size minus the menu bars,toolbars,scrollbars,etc.

var viewportWidth = windows.innerWidth;

var viewportHeight = windows.innerHeight;

//These values specify the horizontal and vertical scrollbar positions.

//They are used to convert between document coordinates and window coordinates.

//These values specify what part of the document appears in the upper-left corner of the screen.

var horizontalScroll = window.pageXOffset;

var verticalScroll = window.pageYOffset;