Extract and merge the values of the same-named properties from multiple objects in the array into a new array

Sep 25, 2022#js70

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This post is translated from Chinese into English through AI.View Original

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This article discusses a method for extracting and merging values of a specific property from multiple objects within an array. The example code provided uses JavaScript to extract the "name" property from objects within an array and merge them into a new array.

In business requirements, there is a method where an array is returned by an interface, containing a large number of objects with the same property names, which is quite common. However, it is necessary to extract all the values of the property named 'name' from them and merge them into an array.

const num = [
    {
      id: 1,
      name: 'abc',
    },
    {
      id: 2,
      name: 'xyz',
    }
]
function getFields(arrnum, field) {
    const resnum = [];
    for (let i = 0; i < arrnum.length; ++i)
    resnum.push(arrnum[i][field]);
    return resnum;
}

const result = getFields(num, "name");
console.log(result);             // ['abc', 'xyz']
console.log(result.join(' '));   // "abc xyz"