This is a quick reference list of JavaScript window methods and properties with examples of how they are used.

• JavaScript – Window alert() Method
  The Window alert() method displays an alert popup in the browser with a message and OK button, and is used to display information to the user.
• JavaScript – window.atob() Method
  The window.atob() method decodes a base-64 encoded string.
• JavaScript – Window blur() Method
  The Window blur() method removes focus from a window.
• JavaScript – window.btoa() Method
  The window.btoa() method encodes a string in base-64.
• JavaScript – Window clearInterval() Method
  The Window clearInterval() method clears a timer set with the setInterval() method.
• JavaScript – Window clearTimeout() Method
  The Window clearTimeout() method clears a timer set with the setTimeout() method.
• JavaScript – Window close() Method
  The Window close() method closes a browser window (or tab depending on how the user has their browser set up).
• JavaScript – Window closed Property
  The Window closed property returns “true” if the specified window is closed.
• JavaScript – Window confirm() Method
  The Window confirm() method displays a dialog box with a message, an OK button, and Cancel button.
• JavaScript – Window focus() Method
  The Window focus() method sets focus to a window.
• JavaScript – window.frameElement Property
  The window.frameElement property returns the frame where the window runs, or null if the window does not run in a frame.
• JavaScript – window.getComputedStyle() Method
  The window.getComputedStyle() method gets the computed CSS properties and values of an HTML element.
• JavaScript – window.frames Property
  The window.frames property returns an array with all window objects in the window.
• JavaScript – window.innerHeight Property
  The window.innerHeight property returns the height of a window’s content area.
• JavaScript – window.innerWidth Property
  The window.innerWidth property returns the width of a window’s content area.
• JavaScript – window.length Property
  The window.length property returns the number of (framed) windows in the window. The count starts with 0 for the 1st, 1 for the 2nd, etc.
• JavaScript – window.localStorage Property
  The window.localStorage object allows you to save key/value pairs in the browser.
• JavaScript – window.matchMedia() Method
  The window.matchMedia() method returns a MediaQueryList with the results from the query.
• JavaScript – Window moveBy() Method
  The Window moveBy() method moves a window a number of pixels, both horizontal and vertical, relative to its current coordinates.
• JavaScript – Window moveTo() Method
  The Window moveTo() method moves a window to a new horizontal and vertical position.
• JavaScript – Window name Property
  The Window name property sets or returns the name of the window.
• JavaScript – window.open() Method
  The window.open() method opens a new browser window/tab, depending on the browser settings and the parameter values.
• JavaScript – Window opener Property
  The opener property returns a reference to the window that created the window.
• JavaScript – window.outerHeight Property
  The window.outerHeight property returns the outer height of the browser window, including all interface elements such as toolbars and scrollbars.
• JavaScript – window.outerWidth Property
  The window.outerWidth property returns the outer width of the browser window, including all interface elements such as toolbars and scrollbars.
• JavaScript – window.pageXOffset Property
  The window.pageXOffset property returns the pixels a document has scrolled the page right from the upper left corner of the window.
• JavaScript – window.pageYOffset Property
  The window.pageYOffset property returns the pixels a document has scrolled down the page from the upper left corner of the window.
• JavaScript – window.parent Property
  The window.parent property returns the parent window of the current window.
• JavaScript – window.print() Method
  The window.print() method opens a print dialog box, which lets the user select from printing options to print the contents of the window.
• JavaScript – Window prompt() Method
  The Window prompt() method displays a dialog box that prompts the user for input.
• JavaScript – Window resizeBy() Method
  The Window resizeBy() method resizes a window by a specified amount.
• JavaScript – Window resizeTo() Method
  The Window resizeTo() method resizes a window to a specified width and height.
• JavaScript – window.screenLeft Property
  The window.screenLeft property returns the horizontal position of a window, relative to the screen.
• JavaScript – window.screenTop Property
  The window.screenTop property returns the vertical position of a window, relative to the screen.
• JavaScript – Window screenX Property
  The Window screenX property returns the horizontal coordinate of a window, relative to the screen.
• JavaScript – Window screenY Property
  The Window screenY property returns the vertical coordinate of a window, relative to the screen.
• JavaScript – window.scrollBy() Method
  The window.scrollBy() method scrolls the document by the specified number of pixels, but only if the page is longer than the window.
• JavaScript – window.scrollTo() Method
  The window.scrollTo() method scrolls the document to specified coordinates.
• JavaScript – window.scrollX Property
  The window.scrollX property returns the pixels a document has scrolled horizontally from the upper left corner of the window.
• JavaScript – window.scrollY Property
  The window.scrollY property returns the pixels a document has scrolled vertically from the upper left corner of the window.
• JavaScript – window.self Property
  The window.self property returns the current window.
• JavaScript – Window sessionStorage Property
  The Window sessionStorage object lets you store key/value pairs in the browser.
• JavaScript – Window setInterval() Method
  The Window setInterval() method calls a function at specified intervals (in milliseconds).
• JavaScript – Window setTimeout() Method
  The Window setTimeout() method calls a function after a number of milliseconds.
• JavaScript – window.stop() Method
  The window.stop() method stops a window from loading, and is the same as clicking stop in the browser.
• JavaScript – window.top Property
  The window.top property returns the topmost window in the current browser window.