Commented Issue: MultiHandleSlider: Fails to handle multiple targets if they are asp:Labels [18577]

In the multiple target case, the extenter assumes that the targets are textboxes. Attached is fixed code that gets the innerText of a DOM element (for asp:Labels a.k.a. <span>) if the DOM element doesn't have a .value.
Comments: Thank you for your suggestion! We will keep it in mind during our future work.