Business
Jobs
  • About Us
  • Solutions
    • Job Postings
      Post your job and receive qualified candidates in 48h.
    • Candidate Assessments
      500+ technical and psychological tests, plus anti-fraud.
    • Headhunting
      Tailor-made executive search from start to finish.
    • Payroll + EOR
      Payroll dispersal and EOR across 15+ LATAM countries.
  • Pricing
  • Jobs

0

147
Views
Passing value from a map function to a React component

I'm a little unsure how to take the value showBtn and pass it into my <ListComponent />

Here's the code:

  const listOptions = list.actionCollection
    .map((option) => {
      const showBtn = option.has(RENDER_BTN);

      // tried to assign showBtn to a value that could be passed to component below

      return option;
    });
{listOptions.map((option) => (
   <ListComponent option={option} key={option.key} />
))}

My check for showBtn is working fine (returning true or false) but I can't access showBtn outside of the map function. Obviously the map is checking through various values so some will be true & others false, so keeping the map syntax is important. Any suggestions would be appreciated!

about 4 years ago · Juan Pablo Isaza
1 answers
Answer question

0

You can return an array of booleans, indicating on which index your condition is true/false:

 const listOptions = list.actionCollection
    .map((option) => ( //Implicit return
      const showBtn = option.has(RENDER_BTN);
    ));

listOptions will look something like: [true, false, false, true...]

And you can use this in your jsx:

{list.actionCollection.map((option, index) => (
   listOptions[index] && <ListComponent option={option} key={option.key} />
))}

Or, simply:

{list.actionCollection.map((option, index) => (
   option.has('RENDER_BTN') && <ListComponent option={option} key={option.key} />
))}
about 4 years ago · Juan Pablo Isaza Report
Answer question
Find remote jobs

Discover the new way to find a job!

Top jobs
Top job categories
Business
Post vacancy Pricing Sales
Legal
Terms and conditions Privacy policy
© 2026 PeakU Inc. All Rights Reserved.
Andres GPT
Show me some job opportunities
There's an error!