从JavaScript中的数组到复杂的字符串格式

Question

I currently have a function which returns this array:

var myArray = [
    { Sepal_Width: { Average_Sepal_Width: series => series.average() } },
    { Sepal_Width: { Sum_Sepal_Width: series => series.sum() } },
    { Petal_Length: { Average_Petal_Length: series => series.average() } }
]

But I need the output to look like this:

Sepal_Width: { 
     Average_Sepal_Width: series => series.average(),
     Sum_Sepal_Width: series => series.sum() 
},
Petal_Length: { 
     Average_Petal_Length: series => series.average() 
}

I'm just wondering if this is even possible, as I need to account for the user adding additional lines to the original array like { Petal_Length: Sum_Petal_Length: series => series.sum() }} and have this automatically go within the Petal_Length: {}.

Sepal_Width: { 
     Average_Sepal_Width: series => series.average(),
     Sum_Sepal_Width: series => series.sum() 
},
Petal_Length: { 
     Average_Petal_Length: series => series.average() },
     Sum_Petal_Length: series => series.sum() }
}

Answer 1

You could get the first key and assign the values to the given key at the result object.

 var array = [{ Sepal_Width: { Average_Sepal_Width: series => series.average() } }, { Sepal_Width: { Sum_Sepal_Width: series => series.sum() } }, { Petal_Length: { Average_Petal_Length: series => series.average() } }], result = array.reduce((r, o) => { Object.entries(o).forEach(([k, v]) => Object.assign(r[k] = r[k] || {}, v)); return r; }, {}); console.log(result);