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
|
(function () {
var keyboardeventKeyPolyfill = {
polyfill: polyfill,
keys: {
3: 'Cancel',
6: 'Help',
8: 'Backspace',
9: 'Tab',
12: 'Clear',
13: 'Enter',
16: 'Shift',
17: 'Control',
18: 'Alt',
19: 'Pause',
20: 'CapsLock',
27: 'Escape',
28: 'Convert',
29: 'NonConvert',
30: 'Accept',
31: 'ModeChange',
32: ' ',
33: 'PageUp',
34: 'PageDown',
35: 'End',
36: 'Home',
37: 'ArrowLeft',
38: 'ArrowUp',
39: 'ArrowRight',
40: 'ArrowDown',
41: 'Select',
42: 'Print',
43: 'Execute',
44: 'PrintScreen',
45: 'Insert',
46: 'Delete',
48: ['0', ')'],
49: ['1', '!'],
50: ['2', '@'],
51: ['3', '#'],
52: ['4', '$'],
53: ['5', '%'],
54: ['6', '^'],
55: ['7', '&'],
56: ['8', '*'],
57: ['9', '('],
91: 'OS',
93: 'ContextMenu',
144: 'NumLock',
145: 'ScrollLock',
181: 'VolumeMute',
182: 'VolumeDown',
183: 'VolumeUp',
186: [';', ':'],
187: ['=', '+'],
188: [',', '<'],
189: ['-', '_'],
190: ['.', '>'],
191: ['/', '?'],
192: ['`', '~'],
219: ['[', '{'],
220: ['\\', '|'],
221: [']', '}'],
222: ["'", '"'],
224: 'Meta',
225: 'AltGraph',
246: 'Attn',
247: 'CrSel',
248: 'ExSel',
249: 'EraseEof',
250: 'Play',
251: 'ZoomOut'
}
};
// Function keys (F1-24).
var i;
for (i = 1; i < 25; i++) {
keyboardeventKeyPolyfill.keys[111 + i] = 'F' + i;
}
// Printable ASCII characters.
var letter = '';
for (i = 65; i < 91; i++) {
letter = String.fromCharCode(i);
keyboardeventKeyPolyfill.keys[i] = [letter.toLowerCase(), letter.toUpperCase()];
}
function polyfill() {
if (!('KeyboardEvent' in window) ||
'key' in KeyboardEvent.prototype) {
return false;
}
// Polyfill `key` on `KeyboardEvent`.
var proto = {
get: function (x) {
var key = keyboardeventKeyPolyfill.keys[this.which || this.keyCode];
if (Array.isArray(key)) {
key = key[+this.shiftKey];
}
return key;
}
};
Object.defineProperty(KeyboardEvent.prototype, 'key', proto);
return proto;
}
keyboardeventKeyPolyfill.polyfill();
})();
|
