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This article mainly introduces JavaScript how to merge multiple objects, the article is very detailed, has a certain reference value, interested friends must read it!

Merge multiple object

You may need to merge the two objects together and create a better, richer object to use. To do this, you can use the extension operator. (yes, three dots! ).

Consider emp and job respectively

Let emp = {'id':' Jack', 'age': 32,' addr': 'India'}; let job = {' title': 'Software Dev',' location': 'Paris'}; copy the code

Use the extension operator to merge them into

/ / spread operatorlet merged = {... emp,... job}; console.log ('Spread merged', merged); copy the code

There is another way to implement a merge. You can use Object.assign () as follows:

Console.log ('Object assign', Object.assign ({}, emp, job)); copy the code

Output result:

Notice that both the extension operator and Object.assign perform a shallow merge. In a shallow merge, the properties of the first object are overridden by the same property values of the second object.

For deep merging, consider using _ merge in lodash.

The above is all the content of the article "how JavaScript merges multiple objects". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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