Last change
on this file since b738035 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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100644
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File size:
1.1 KB
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1 |
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2 | var NativeCustomEvent = global.CustomEvent;
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3 |
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4 | function useNative () {
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5 | try {
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6 | var p = new NativeCustomEvent('cat', { detail: { foo: 'bar' } });
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7 | return 'cat' === p.type && 'bar' === p.detail.foo;
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8 | } catch (e) {
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9 | }
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10 | return false;
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11 | }
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12 |
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13 | /**
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14 | * Cross-browser `CustomEvent` constructor.
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15 | *
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16 | * https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent.CustomEvent
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17 | *
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18 | * @public
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19 | */
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20 |
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21 | module.exports = useNative() ? NativeCustomEvent :
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22 |
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23 | // IE >= 9
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24 | 'undefined' !== typeof document && 'function' === typeof document.createEvent ? function CustomEvent (type, params) {
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25 | var e = document.createEvent('CustomEvent');
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26 | if (params) {
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27 | e.initCustomEvent(type, params.bubbles, params.cancelable, params.detail);
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28 | } else {
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29 | e.initCustomEvent(type, false, false, void 0);
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30 | }
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31 | return e;
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32 | } :
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33 |
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34 | // IE <= 8
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35 | function CustomEvent (type, params) {
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36 | var e = document.createEventObject();
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37 | e.type = type;
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38 | if (params) {
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39 | e.bubbles = Boolean(params.bubbles);
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40 | e.cancelable = Boolean(params.cancelable);
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41 | e.detail = params.detail;
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42 | } else {
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43 | e.bubbles = false;
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44 | e.cancelable = false;
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45 | e.detail = void 0;
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46 | }
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47 | return e;
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48 | }
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