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

var value; // Type: string
value = instance.getAsBase64String();

function getAsBase64String() : string;

Return Value

This function sends a synchronous request to get image as a base64-string. If you want to use asynchronous request instead of synchronous request, please use WebAcquiredImageJS.getAsBase64StringAsync function.

Reference

WebAcquiredImageJS Class
WebAcquiredImageJS Members