how can i convert speech to text in my website code example

Example 1: speech to text in js

$('#start-record-btn').on('click', function(e) {
  recognition.start();
});

Example 2: speech to text in js

var mobileRepeatBug = (current == 1 && transcript == event.results[0][0].transcript);

if(!mobileRepeatBug) {
  noteContent += transcript;
  noteTextarea.val(noteContent);
}