var instance = new Vintasoft.Twain.WebAcquiredImageJS(twainDeviceManager, imageId, imageInfo);

var value; // Type: string

// Parameters
var successFunc; // Type: function
var errorFunc; // Type: function

value = instance.getAsBase64StringAsync(successFunc, errorFunc);

function getAsBase64StringAsync(
   successFunc
A function that will be executed if request is executed successfully. Function prototype: "successFunc(image, imageAsBase64String)", where 'image' parameter is an instance of WebAcquiredImageJS class, 'imageAsBase64String' parameter is base64-string.
 : Function, 
   errorFunc
A function that will be executed if request is failed. Function prototype: "errorFunc(image, errorMessage)", where 'image' parameter is an instance of WebAcquiredImageJS class, 'errorMessage' parameter is string that describes error.
 : Function
) : string;

Parameters

successFunc

A function that will be executed if request is executed successfully. Function prototype: "successFunc(image, imageAsBase64String)", where 'image' parameter is an instance of WebAcquiredImageJS class, 'imageAsBase64String' parameter is base64-string.

errorFunc

A function that will be executed if request is failed. Function prototype: "errorFunc(image, errorMessage)", where 'image' parameter is an instance of WebAcquiredImageJS class, 'errorMessage' parameter is string that describes error.

Return Value

This function sends an asynchronous request to get image as a base64-string. If you want to use synchronous request instead of asynchronous request, please use WebAcquiredImageJS.getAsBase64String function.

Reference

WebAcquiredImageJS Class
WebAcquiredImageJS Members