Detect Speak function

1

I uses built in speak function in one of my android phone, which the device’s didn’t support. May I know how should I detect and hence disable speak. There is a err :Uncaught type err, cannot set properties of undefined(setting text).
Best rdgs, tst

2

In that button, I also have localStorage. I wonder which is the culprit. Remote debugging doesn’t shows any err…

3

Let me do some homework first when I reached home tonight…

4

Below is my code, I suspect my Samsung tab3 is unstable for my app, as sometimes, it even restarts the phone before my app finishes installs.

Dim kl = 0
Dim soundplay = 0

Function Button9_onclick()
     Try
  localStorage.private = "test"
Catch err
   MsgBox "Please turn Private Browsing off" 
End Try 
  kl = 0
 
  soundplay = 0
  kl = localStorage.getItem("keysoundplay") 'creates localStorage.key with defined value  
  If kl = 0 Then
  'on
  soundplay = 1
  'MsgBox "turn on sound"
  
  Dim voice
  If InStr(navigator.vendor,"Apple") Then voice = "Alex"
  If InStr(navigator.vendor,"Google") Then voice = "Google UK English Male"
  'Speak("Hello World", voice)
  Speak("Cheers! s Fighter")
  
  Button9.value = "sound on"
  ElseIf kl = 1 Then
  'off
  soundplay = 0
  'MsgBox "turn off sound"
  Button9.value = "sound off"
  Else
  'on
  soundplay = 1
  MsgBox "turn on sound"
  Button9.value = "sound on"
  End If
  localStorage.setItem("keysoundplay",soundplay) 'creates localStorage.key with defined value  
End Function
5

But my 2 other phone also have similar err?!

6

The Speak function using the speechSynthesis feature of JavaScript.

Here’s some JavaScript code to see if it exists:

if (typeof(speechSynthesis) != 'undefined' && speechSynthesis != null) {
...
}
7

Bravo,! all is well now.my note3 can ‘playtone’ , cannot ‘speak’. Thanks for the code, it solves everything…
Below is my revised code.

  
JavaScript
  var voice;
  voice = "";

if ( typeof(speechSynthesis) != "undefined" && (speechSynthesis != null) ) {
 
  if (InStr(navigator.vendor, "Apple")) {
   voice = "Alex";}
  if (InStr(navigator.vendor, "Google")) {
   voice = "Google UK English Male";}
   
  Speak("Cheers! s Fighter",voice);
  }

End JavaScript
8

This morning, a new err occured:deprecated feature used, speech Synthesis. speak() without user activation is deprecated and will be removed…

9

Searching the Web, shows that the usual way of using speak is gone, as it were abuse at numerous site. Hopefully, there will be a new kind of speak function with user activation coming soon…

10

Here’s an article about it: