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1.一切(引用類型)都是對(duì)象,對(duì)象是屬性的集合 2.對(duì)象是通過函數(shù)創(chuàng)建的 3.每個(gè)函數(shù)都有一個(gè)prototype 4.每個(gè)對(duì)象都有一個(gè)proto...