var instance = new Vintasoft.Twain.WebTwainDeviceJS(deviceName, productFamily, manufacturer, driverVersion, twainVersion, deviceManager, is64Bit);

var value; // Type: Vintasoft.Twain.WebPageAutoSizeEnumJS
value = instance.get_PageAutoSize();

function get_PageAutoSize() : WebPageAutoSizeEnumJS;

Return Value

This property sends a synchronous request to get value of WebDeviceCapabilityIdEnumJS.IAutoSize capability. If you want to use asynchronous request instead of synchronous request, please get information about WebDeviceCapabilityIdEnumJS.IAutoSize capability using WebTwainDeviceJS.getCapabilityAsync or WebTwainDeviceJS.getCapabilitiesAsync function.

Reference

WebTwainDeviceJS Class
WebTwainDeviceJS Members