How to Alter Key Names in Object Arrays Using Modern JavaScript?

Altering Key Names in Object Arrays

In the world of JavaScript, the ability to manipulate objects and arrays is crucial. One such task is changing the key name in an array of objects.

For instance, consider an array of objects:

var arrayObj = [{key1:'value1', key2:'value2'},{key1:'value1', key2:'value2'}];

Your goal is to transform each key1 into stroke, resulting in the following output:

var arrayObj = [{stroke:'value1', key2:'value2'},{stroke:'value1', key2:'value2'}];

In modern JavaScript, a combination of destructuring, rest syntax, spread syntax, and array map provides an elegant solution:

const arrayOfObj = [{
  key1: 'value1',
  key2: 'value2'
}, {
  key1: 'value1',
  key2: 'value2'
}];
const newArrayOfObj = arrayOfObj.map(({
  key1: stroke,
  ...rest
}) => ({
  stroke,
  ...rest
}));

console.log(newArrayOfObj);

This technique leverages destructuring to extract key1 as stroke and combine it with the remaining properties using the spread operator. The map method is then applied to each object in the array, resulting in a new array with modified key names.

By understanding this approach, you can effectively rename keys in object arrays, opening up versatile options for organizing and manipulating your data structures.

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