ActionScript 3 AS3 Form Field焦点/模糊功能

Posted 2021-05-23

with (PATHTO.YOURTEXTFIELD_INSTANCE_NAME) {
    addEventListener(FocusEvent.FOCUS_IN, focusField);
    addEventListener(FocusEvent.FOCUS_OUT, blurField);
}

private function focusField(e:Event) {
    switch (e.currentTarget.name) {
        case "YOURTEXTFIELD_INSTANCE_NAME" :
        if(e.currentTarget.text == "YOUR DEFAULT MESSAGE") e.currentTarget.text = "";
        break;

    }
}
private function blurField(e:Event) {
    switch (e.currentTarget.name) {
        case "YOURTEXTFIELD_INSTANCE_NAME" :
        if(e.currentTarget.text == "") e.currentTarget.text = "YOUR DEFAULT MESSAGE";
        break;

    }
}