JS ES6 Correct way to filter object by array of keys

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旧时难觅i
旧时难觅i 2021-01-26 21:57

I would like to take an array of objects and filter each object to only return the properties where the key matches an item in an array.

For example:

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4条回答
  •  悲哀的现实
    2021-01-26 22:21

    const myKeys    = ['key_1', 'key_3'];
    const myArray   = [
    	{
    		key_1: 'Some Value A',
    		key_2: 'Some Other Value A',
    		key_3: 'Some Final Value A',
    	},
    	{
    		key_1: 'Some Value B',
    		key_2: 'Some Other Value B',
    		key_3: 'Some Final Value B',
    	},
    	{
    		key_1: 'Some Value C',
    		key_2: 'Some Other Value C',
    		key_3: 'Some Final Value C',
    	},
    ];
    
    const result = myArray.map(i => Object.fromEntries(Object.entries(i).filter(([k]) => myKeys.includes(k))));
    
    console.log(result);

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