Forked from nuxodin/focusin focusout support for firefox.js
Last active Aug 29, 2015
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/* focusin/out event polyfill (firefox) */ | |
!function(){ | |
var w = window, | |
d = w.document; | |
if( w.onfocusin === undefined ){ | |
d.addEventListener('focus' ,addPolyfill ,true); | |
d.addEventListener('blur' ,addPolyfill ,true); | |
d.addEventListener('focusin' ,removePolyfill ,true); | |
d.addEventListener('focusout' ,removePolyfill ,true); | |
} | |
function addPolyfill(e){ | |
var type = e.type === 'focus' ? 'focusin' : 'focusout'; | |
var event = new CustomEvent(type, { bubbles:true, cancelable:false }); | |
event.c1Generated = true; | |
e.target.dispatchEvent( event ); | |
} | |
function removePolyfill(e){ | |
if(!e.c1Generated){ // focus after focusin, so chrome will the first time trigger tow times focusin | |
d.removeEventListener('focus' ,addPolyfill ,true); | |
d.removeEventListener('blur' ,addPolyfill ,true); | |
d.removeEventListener('focusin' ,removePolyfill ,true); | |
d.removeEventListener('focusout' ,removePolyfill ,true); | |
} | |
setTimeout(function(){ | |
d.removeEventListener('focusin' ,removePolyfill ,true); | |
d.removeEventListener('focusout' ,removePolyfill ,true); | |
}); | |
} | |
}(); |
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