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朋友们解释一下输出结果

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朋友们解释一下输出结果

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第一个是 对象构造函数
第二个是 函数调用返回一个空字符串
第三个通过 new 构建了一个字符串对象


与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
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