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第一题

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Jay~

#1 Created at ... [Delete] [Delete and Lock User]

var x = arr[1,[1]].splice(1,1)

我这个方法有点讨巧了

Jay~

#2 Created at ... [Delete] [Delete and Lock User]

打错了是这个var x = arr[1].splice(1,1);

小心蓝要没

#3 Created at ... [Delete] [Delete and Lock User]

 arr[1][1]

不响丸辣

#4 Created at ... [Delete] [Delete and Lock User]

var x = arr[1][1];

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