我定义了扩展名 s config. xml 文件中的 2 个首选项 :
<preference name="interval" value="1800" readonly="false" />
<preference name="pcount" value="5" readonly="false" />
当我在背景.js 脚本中使用以下方法获取这些值时 :
interval = widget.preferences.getItem("interval")
pcount = widget.preferences.getItem("pcount")
interval 和 pcount 变量的值改为“null”,而不是1800和5。
我做错什么了?
To answer my own question:
This seems to be an Opera quirk. After some experiments, I found that if you restart Opera (after adding the extension) widget.preferences seems to store and retrieve the values. Sometimes you have to uninstall and install the extension again. Sometimes you have to clear the cache. Sometimes you have to do all.
我不确定你是否需要"获得项目"的方法, 因为您可以访问首选
widget.preferences["interval"]
但即使该方法也返回 null 。
似乎通过 config. xml 设置偏好无效 。 请尝试 < code> conole. log( widget. preferences) < / code > 来设置偏好, 在那里不会有您的设置 。
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