JavaScript copyWithin() 方法JavaScript Array 對象實(shí)例 復(fù)制數(shù)組的前面兩個(gè)元素到后面兩個(gè)元素上: var fruits = ["Banana", "Orange", "Apple", "Mango"]; fruits.copyWithin(2, 0); fruits 輸出結(jié)果: Banana,Orange,Banana,Orange 嘗試一下 ?
edu.jb51.net/jsref/jsr...copywithin... 2025-5-15