Keyboard multiple key input

Cocos Creator
#1 
cc.Class({
    extends: cc.Component,
    onLoad: function () {
        // add key down and key up event
        cc.systemEvent.on(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
        cc.systemEvent.on(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);
    },

    destroy () {
        cc.systemEvent.off(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
        cc.systemEvent.off(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);
    },

    onKeyDown: function (event) {
        switch(event.keyCode) {
            case cc.macro.KEY.a:
                console.log('Press a key');
                break;
        }
    },

    onKeyUp: function (event) {
        switch(event.keyCode) {
            case cc.macro.KEY.a:
                console.log('release a key');
                break;
        }
    }
});

in my game when i am moving player in left direction (holding left key )and press jump button and release button , the event callback gets stopped being called . i want to continuously move player after the jump

#2

use some boolean vars to store the state of each key, then do the logic after any one of the key states changed. you may get want you want.

to be honest, I always do it as mentioned above.

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