Steps to efficiently enumerate the array of parameters in the NextJS router:

Question

Steps to efficiently enumerate the array of parameters in the NextJS router:

In my NextJS application, I have implemented a catch all route that uses the following code:

import { useRouter} from 'next/router'

This code snippet retrieves all the parameters from the URL path:

const { params = [] } = router.query

When I console log the params value, I can see all the URL path elements.

My goal is to display all the params values in an unordered list:

return <ul>
  {params.map((param) => {
    <li>{param}</li>
  })}
</ul>

However, when I try this code, nothing gets displayed. The list is empty.

How can I modify this to successfully display the list of parameters?

javascript arrays next.js

Answer 1

Answer №1

When using curly braces in JavaScript, remember to include the return keyword.

return <ul>
  {params.map((param) => {
    return (<li>{param}</li>);
  })}
</ul>

This is an example of how arrow functions behave in JS.

The initial code does not have a return statement, resulting in undefined being returned and nothing being displayed:

return <ul>
  {params.map((param) => {
    <li>{param}</li>
    //No return statement  
})}
</ul>

In short: You can eliminate the curly braces.

return <ul>
  {params.map((param) => <li>{param}</li>)}
</ul>

Answer 2

When using curly braces in JavaScript, remember to include the return keyword.

return <ul>
  {params.map((param) => {
    return (<li>{param}</li>);
  })}
</ul>

This is an example of how arrow functions behave in JS.

The initial code does not have a return statement, resulting in undefined being returned and nothing being displayed:

return <ul>
  {params.map((param) => {
    <li>{param}</li>
    //No return statement  
})}
</ul>

In short: You can eliminate the curly braces.

return <ul>
  {params.map((param) => <li>{param}</li>)}
</ul>

Answer 3

Answer №2

It seems like there may be an issue with how you are using the .map function. Consider trying this approach instead:

return params.map((param) => param);

By implementing this, your params will be displayed together on a single line. Feel free to customize the formatting based on your specific preferences.

Answer 4

It seems like there may be an issue with how you are using the .map function. Consider trying this approach instead:

return params.map((param) => param);

By implementing this, your params will be displayed together on a single line. Feel free to customize the formatting based on your specific preferences.

Steps to efficiently enumerate the array of parameters in the NextJS router:

Answer №1

Answer №2

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