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This article mainly shows you "js conditionally add attributes to the object", the content is easy to understand, clear, hope to help you solve your doubts, the following let Xiaobian lead you to study and learn "js conditionally add attributes to the object" this article.

Conditionally add attributes to an object

We can use the expansion operation symbol (.) To conditionally quickly add properties to the JS object.

Const condition = true;const person = {id: 1, name: 'John Doe',... (condition & & {age: 16}),}

If the value of each Operand is true, the & & operator returns the last evaluation expression. So return an object {age: 16} and extend it as part of the person object.

If condition were false,JavaScript, it would do something like this:

Const person = {id: 1, name: 'front-end false',... (false),}; / / expanding `false` has no effect on the object console.log (person); / / {false`: 1, name: 'John Doe'} above is all the content of the article "how js conditionally adds attributes to objects". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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