Usually I pass props to my components/HTML tags as follow: <div style={{ marginLeft: '1rem' }} id={myIdConst} />

But recently I was reading some examples from TanStack table and encountered this:

<th
  {...{
    key: header.id,
    colSpan: header.colSpan,
    style: {
      width: header.getSize(),
    },
  }}
> ... </th>

Here, props are passed as a object with the spread operator. When this code is transpiled to javascript code, it will be the same as the usual way of passing props. To me, it seems more readable and easier to write, specially when a prop is an object (like style, the usual way would be style={{prop: 'value'}}, here would be ...{style: {prop: 'value'}})

But I never saw this at any other place. Why is it? Is it a bad practice?

CodePudding user response：

I think it's just a preference. Which you are more comfortable with is the better one.

I guess it is done with the spread operator only to avoid ={} in the props

CodePudding user response：

Passing props as an object with the spread operator (i.e., {...props}) is a valid way to pass props in JavaScript, and it can be a useful technique in certain situations. However, it's important to consider whether it makes sense for your specific use case.

One advantage of using the spread operator to pass props is that it allows you to pass all of the props in a single expression, which can make the code more concise and easier to read. For example, in the code you provided, the spread operator allows you to pass several props in a single expression, rather than having to write out each prop individually.

However, there are also some potential drawbacks to using the spread operator to pass props. One issue is that it can make it more difficult to understand the code if you are not familiar with the spread operator. Additionally, using the spread operator to pass props can make it harder to debug your code, as it can be harder to see exactly which props are being passed.

In general, whether or not it is a good practice to use the spread operator to pass props will depend on the specific context and the needs of your application. If you find that using the spread operator helps to make your code more readable and maintainable, then it might be a good choice for you. However, if you find that it makes your code harder to understand or debug, then it might be better to use a different approach.