js中動態獲取object類型的鍵值

例子：javascript var obj ={"name1":"張三","name2":"李四"}; var key = "name1"; var value = obj.key; //獲得的是 "undefined" //靜態獲取 value = obj.name1; //獲得的是 "張三" //動態獲取 value = obj[key]; //獲得的是 "張三"

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