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[英]hasOwnProperty & Object.keys in javascript not working as expected
[英]Javascript function Object.keys not working correct
Javascript 函數 Object.keys 似乎無法正常工作:
public availableParents: any[] = [];
availableParents[abbreviation] = textField;
字段 availableParents 被發送到一個函數。
然后在調試模式下,我顯示變量......以及變量上的 Object.keys :
立即窗口:
?dataSource
[]
__proto__: []
ALG: "ALG | Alg"
length: 0
SC-1-1: "Scene"
? Object.keys(dataSource)
[SC-1-1,ALG]
__proto__: []
length: 2
[0]: "SC-1-1"
[1]: "ALG"
我原以為 Object.keys 會返回 (?) :
[ALG,SC-1-1]
__proto__: []
length: 2
[0]: "ALG"
[1]: "SC-1-1"
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