'Alt' keyup event don't work on Firefox
-
28-05-2021 - |
Question
i try to capture this key : alt+arrow down, alt+arrow up. First, i capture alt key down :
var isAlt = false;
$(document).keydown(function (e) {
if(e.which == 18){isAlt=true;}
}).keyup(function (e) {
if(e.which == 18){isAlt=false;}
});
this code is ok, and alt keyup is detected.
But, if i add arrow key down, when arrow keydown, it's ok, but after alt keyup is not detected :
var isAlt = false;
$(document).keydown(function (e) {
if(e.which == 18){isAlt=true;}else{
if(e.which == 38 && isAlt == true) {
//action code here work
console.log('action ok');
}
}
}).keyup(function (e) {
if(e.which == 18){isAlt=false;}
});
You can try this on console, and after log 'action ok', you need press again alt key for "isAlt = false". But, this code work fine on Chrome.
Anyone have one idea for correct this bug ?
Solution
You need to check the event.altKey
property: https://developer.mozilla.org/en/DOM/KeyboardEvent
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