Learning By Doing - Here we try to provide some sample codes and links to external resources. There is a lot of HTML5 materials.
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Sample NPAPI for PC Win32PC plugin dll file(nptestplugin.dll) and webpage (nptest.html) to call 3 plugin sample functions. testPopUp(), testReturnInt(), and testReturnString()
There is a plugin available for both Intermec Browser and HTML5 Browser that can play a wav file. The wav file can be locally stored on the device or stored on a server in the same directory as the html file.