計算屬性名稱。 「吞掉-角文件排序：意外的標記[」

Question

我需要ASIGN一個JSON屬性名動態，所以我試着用computed property names：

var dynamicNameProperty = (!irrelevantCondition) ? "name1" : "name2"; 

var element = { 
    "oneStaticNameProp":"Hi!", 
    [dynamicProperty] : "Oh oh... This produces an error." 
}; 

...但是，當我運行gulp serve我得到了一個錯誤：

Error in parsing: "main\templates\dashboard\dashboard.controller.js", Line 160: Unexpected token [ 

我bracket notation嘗試過：

var dynamicNameProperty["name"] = (!irrelevantCondition) ? "name1" : "name2"; 

var element = { 
    "oneStaticNameProp":"Hi!", 
    dynamicNameProperty["name"] : "Oh oh... This produces an error too." 
}; 

，但我得到了同樣的錯誤......於是，我就嘗試用dot dotation運氣：

var myObject = { 
    dynamicNameProperty: (!irrelevantCondition) ? "name1" : "name2" 
}; 

var element = { 
    "oneStaticNameProp":"Hi!", 
    myObject.dynamicNameProperty : "Oh oh... This produces an error too." 
}; 

我也得到了類似的錯誤：

Error in parsing: "main\templates\dashboard\dashboard.controller.js", Line 160: Unexpected token . 

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顯然......有東西在逃避我。你知道任何替代或解決方案嗎？

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WARNING: This is only an example of my problem: I can not and I do not want just use an if statement for the two states of dynamicNameProperty

Answer 1

您可以添加dynamicNameProperty 創建 '元素' 對象後：

var dynamicNameProperty = (!irrelevantCondition) ? "name1" : "name2"; 

var element = { 
    "oneStaticNameProp":"Hi!" 
}; 

element[dynamicNameProperty] = "Yay....no error here!";