Tells whether emulation is supported.

Parameters:

Clears the overriden device metrics.

Parameters:

Clears the overriden Geolocation Position and Error.

Parameters:

Sets or clears an override of the default background color of the frame. This override is used if the content does not specify one.

Parameters: color - - RGBA of the default background color. If not specified, any existing override will be cleared.

Overrides the values of device screen dimensions (window.screen.width, window.screen.height, window.innerWidth, window.innerHeight, and "device-width"/"device-height"-related CSS media query results).

Parameters: width - - Overriding width value in pixels (minimum 0, maximum 10000000). 0 disables the override.height - - Overriding height value in pixels (minimum 0, maximum 10000000). 0 disables the override.deviceScaleFactor - - Overriding device scale factor value. 0 disables the override.mobile - - Whether to emulate mobile device. This includes viewport meta tag, overlay scrollbars, text autosizing and more.scale - - Scale to apply to resulting view image.screenWidth - - Overriding screen width value in pixels (minimum 0, maximum 10000000).screenHeight - - Overriding screen height value in pixels (minimum 0, maximum 10000000).positionX - - Overriding view X position on screen in pixels (minimum 0, maximum 10000000).positionY - - Overriding view Y position on screen in pixels (minimum 0, maximum 10000000).dontSetVisibleSize - - Do not set visible view size, rely upon explicit setVisibleSize call.screenOrientation - - Screen orientation override.viewport - - If set, the visible area of the page will be overridden to this viewport. This viewport change is not observed by the page, e.g. viewport-relative elements do not change positions.

Emulates the given media for CSS media queries.

Parameters: media - - Media type to emulate. Empty string disables the override.

Overrides the Geolocation Position or Error. Omitting any of the parameters emulates position unavailable.

Parameters: latitude - - Mock latitudelongitude - - Mock longitudeaccuracy - - Mock accuracy

Switches script execution in the page.

Parameters: value - - Whether script execution should be disabled in the page.

Enables touch on platforms which do not support them.

Parameters: enabled - - Whether the touch event emulation should be enabled.maxTouchPoints - - Maximum touch points supported. Defaults to one.

Allows overriding user agent with the given string.

Parameters: userAgent - - User agent to use.acceptLanguage - - Browser langugage to emulate.platform - - The platform navigator.platform should return.