1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197
| try {
var SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition;
var recognition = new SpeechRecognition();
}
catch(e) {
console.error(e);
$('.no-browser-support').show();
$('.app').hide();
}
var noteTextarea = $('#appreciation');
var instructions = $('#recording-instructions');
var notesList = $('ul#notes');
var noteContent = '';
var notes = getAllNotes();
renderNotes(notes);
/*-----------------------------
Voice Recognition
------------------------------*/
// If false, the recording will stop after a few seconds of silence.
// When true, the silence period is longer (about 15 seconds),
// allowing us to keep recording even when the user pauses.
recognition.continuous = true;
// This block is called every time the Speech APi captures a line.
recognition.onresult = function(event) {
// event is a SpeechRecognitionEvent object.
// It holds all the lines we have captured so far.
// We only need the current one.
var current = event.resultIndex;
// Get a transcript of what was said.
var transcript = event.results[current][0].transcript;
// Add the current transcript to the contents of our Note.
// There is a weird bug on mobile, where everything is repeated twice.
// There is no official solution so far so we have to handle an edge case.
var mobileRepeatBug = (current == 1 && transcript == event.results[0][0].transcript);
if(!mobileRepeatBug) {
noteContent += transcript;
noteTextarea.val(noteContent);
}
};
recognition.onstart = function() {
instructions.text('Voice recognition activated. Try speaking into the microphone.');
}
recognition.onspeechend = function() {
instructions.text('You were quiet for a while so voice recognition turned itself off.');
}
recognition.onerror = function(event) {
if(event.error == 'no-speech') {
instructions.text('No speech was detected. Try again.');
};
}
/*-----------------------------
App buttons and input
------------------------------*/
$('#start-record-btn').on('click', function(e) {
if (noteContent.length) {
noteContent += ' ';
}
recognition.start();
});
$('#pause-record-btn').on('click', function(e) {
recognition.stop();
instructions.text('Voice recognition paused.');
});
// Sync the text inside the text area with the noteContent variable.
noteTextarea.on('input', function() {
noteContent = $(this).val();
})
$('#save-note-btn').on('click', function(e) {
recognition.stop();
if(!noteContent.length) {
instructions.text('Could not save empty note. Please add a message to your note.');
}
else {
// Save note to localStorage.
// The key is the dateTime with seconds, the value is the content of the note.
saveNote(new Date().toLocaleString(), noteContent);
// Reset variables and update UI.
noteContent = '';
renderNotes(getAllNotes());
noteTextarea.val('');
instructions.text('Note saved successfully.');
}
})
notesList.on('click', function(e) {
e.preventDefault();
var target = $(e.target);
// Listen to the selected note.
if(target.hasClass('listen-note')) {
var content = target.closest('.note').find('.content').text();
readOutLoud(content);
}
// Delete note.
if(target.hasClass('delete-note')) {
var dateTime = target.siblings('.date').text();
deleteNote(dateTime);
target.closest('.note').remove();
}
});
/*-----------------------------
Speech Synthesis
------------------------------*/
function readOutLoud(message) {
var speech = new SpeechSynthesisUtterance();
// Set the text and voice attributes.
speech.text = message;
speech.volume = 1;
speech.rate = 1;
speech.pitch = 1;
window.speechSynthesis.speak(speech);
}
/*-----------------------------
Helper Functions
------------------------------*/
function renderNotes(notes) {
var html = '';
if(notes.length) {
notes.forEach(function(note) {
html+= `<li class="note">
<p class="header">
<span class="date">${note.date}</span>
<a href="#" class="listen-note" title="Listen to Note">Listen to Note</a>
<a href="#" class="delete-note" title="Delete">Delete</a>
</p>
<p class="content">${note.content}</p>
</li>`;
});
}
else {
html = '<li><p class="content">You don\'t have any notes yet.</p></li>';
}
notesList.html(html);
}
function saveNote(dateTime, content) {
localStorage.setItem('note-' + dateTime, content);
}
function getAllNotes() {
var notes = [];
var key;
for (var i = 0; i < localStorage.length; i++) {
key = localStorage.key(i);
if(key.substring(0,5) == 'note-') {
notes.push({
date: key.replace('note-',''),
content: localStorage.getItem(localStorage.key(i))
});
}
}
return notes;
}
function deleteNote(dateTime) {
localStorage.removeItem('note-' + dateTime);
} |
Partager