Dynamically turn autofill on and off

autofill.js

$('#addrBox').on('mouseup keyup', function(){
    var $this = $(this);
    var val = $this.val(); 
    val = val.length;
    if(val === 0){
        $this.attr('autocomplete', 'on');
    }
    else{
        $this.attr('autocomplete', 'off');
    }
}).on('mousedown keydown', function(){var $this = $(this);
    var val = $this.val(); 
    var length = val.length;
    if(!length){
        $this.attr('autocomplete', 'new-password');
    }    
})