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                使用指定值填充數組。 ## 語法 ~~~ arrayObj.fill(value [ , start [ , end ] ]); ~~~ ## 參數 |參數|定義| |--|--| |arrayObj|必需。數組對象。| |value|必需。用于填充數組的值。| |start|可選。用于填充數組值的起始索引。默認值為 0。| |end|可選。用于填充數組值的結束索引。默認值是 this 對象的 length 屬性。| ## 備注 如果 start 為負,則 start 被視為 length+start,其中,length 是數組的長度。如果 end 為負,則 end 被視為 length+end。 以下代碼示例用值填充數組。 ~~~ [0, 0, 0].fill(7, 1); // Array contains [0,7,7] [0, 0, 0].fill(7); // Array contains [7,7,7] ~~~
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