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如何遍历对象的属性?

<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3Cscript%3E%20%0D%0Afunction%20Employee(name%2C%20age%2C%20title%2C%20salary)%2F%2F%E6%8B%AC%E5%8F%B7%E9%87%8C%E7%9A%84%E4%B8%9C%E4%B8%9C%E6%98%AF%E5%8F%82%E6%95%B0%2C%E8%BF%98%E6%98%AF%E5%B1%9E%E6%80%A7%3F%E5%A6%82%E4%BD%95%E9%81%8D%E5%8E%86%3F%20%0D%0A%7B%20%0D%0A%20%20%20%20this.name%20%3D%20name%3B%20%0D%0A%20%20%20%20this.age%20%3D%20age%3B%20%0D%0A%20%20%20%20this.title%20%3D%20title%3B%20%0D%0A%20%20%20%20this.salary%20%3D%20salary%3B%20%0D%0A%0D%0A%20%20%20%20this.promotion%20%3D%20promotion%3B%20%0D%0A%7D%20%0D%0A%0D%0Afunction%20promotion(new_title%2Cpercent_raise)%20%0D%0A%7B%20%0D%0A%20%20%20%20var%20salary_increase%20%3D%20this.salary%20*%20percent_raise%3B%20%0D%0A%20%20%20%20this.salary%20%3D%20this.salary%20%2B%20salary_increase%3B%20%20%20%20%20%0D%0A%20%20%20%20this.title%20%3D%20new_title%3B%20%0D%0A%7D%20%0D%0Afunction%20newdx()%7B%20%0D%0Avar%20aq%3Dnew%20Employee(%22aq%22%2C22%2C%22qigai%22%2C3000)%20%0D%0Aalert(aq.name%2B%22%E7%9A%84%E8%81%8C%E4%B8%9A%E6%98%AF%22%2Baq.title%2B%22%2C%E8%96%AA%E6%B0%B4%E6%98%AF%22%2Baq.salary)%20%0D%0Aaq.promotion(%22bangzhu%22%2C1)%20%0D%0Aalert(aq.name%2B%22%E7%9A%84%E6%96%B0%E8%81%8C%E4%B8%9A%E6%98%AF%22%2Baq.title%2B%22%2C%E8%96%AA%E6%B0%B4%E6%98%AF%22%2Baq.salary)%20%0D%0A%7D%20%0D%0Anewdx()%20%0D%0A%3C%2Fscript%3E">

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