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                # 淺拷貝和深拷貝的問題 深拷貝和淺拷貝是只針對Object和Array這樣的復雜類型的 也就是說a和b指向了同一塊內存,所以修改其中任意的值,另一個值都會隨之變化,這就是淺拷貝 淺拷貝, ”Object.assign() 方法用于將所有可枚舉的屬性的值從一個或多個源對象復制到目標對象。它將返回目標對象 深拷貝,JSON.parse()和JSON.stringify()給了我們一個基本的解決辦法。但是函數不能被正確處理
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