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工作从MDN网站方法Array.splice不能在Firefox控制台
var myFish = ['angel', 'clown', 'mandarin', 'surgeon'];
// removes 0 elements from index 2, and inserts 'drum'
var removed = myFish.splice(2, 0, 'drum');
尝试下面的代码不分配,除去剪接['angel', 'clown', 'drum', 'mandarin', 'surgeon']
的预期输出,而是和空数组[]
。