Filter button with Javascript & React

Question

Good day! I am hoping to get some help with a project I am working on. I created a filter functionality so that when a user click on a button, they can filter my projects based on what type of project it is.

I was able to get the "ALL" button to work but the other buttons are not working. The expected output is when I click on the button it filters out the other projects and keeps the one that matches the category. However the current output is when I click on the button, the projects disappear.

This is my code:

    import React, {useState} from "react";
import ReactDOM from "react-dom";
import styles from "./projects.module.scss";
import cards from "./allData";


function Projects() {
 
  const [state, setState] = useState(cards);

  const handleBtns = (e) => {
      let word = e.target.value;
      function isCardActive() {
        for(const card of cards) {
            if (cards.category === "FEATURED") {
                return true;
            } else if (cards.category === "WEB APP") {
                return true;
            } else if (cards.category === "MOBLE APP"){
                return true
            }
        } 
      };

      if(word === 'All') { 
          setState(cards)
      } else if(word === 'Featured') {
          const filtered = cards.filter(isCardActive);
          setState(filtered);

    }  else if(word === 'webApp') {
        const filtered = cards.filter(isCardActive);
        setState(filtered);

  } else if(word === 'mobileApp') {
    const filtered = cards.filter(isCardActive);
    setState(filtered);
  }
}


    return(
        <div className={styles.projects} id="projectHash">
           <section>
               <h3>PROJECTS</h3>
            </section>

            
             <section id={styles.filterMain}>
            <button className={`${styles.filterBox} ${styles.active}`} onClick={handleBtns} type="button" value="All"  >VIEW ALL</button> 
            <button className={styles.filterBox} onClick={handleBtns} type="button" value="Featured"  >FEATURED</button>
            <button className={styles.filterBox} onClick={handleBtns} type="button" value="webApp"  >WEB APP</button>
            <button className={styles.filterBox} onClick={handleBtns} type="button" value="mobileApp" >MOBILE APP</button>  
                 
            </section>

            <section>

           {state.map((cards) => (
                <div className={styles.projectcard} key={cards.id} >

                <h4>Project Name: {cards.title} </h4>
                <br/>
                <h4>{cards.image}</h4>
               
            </div>

           ))}
           </section>
            
        </div>
    )
};

export default Projects;

This is code for the file that contains the array of data

import card1 from "../../assets/card1.jpg";
import card2 from "../../assets/card2.jpg";
import card3 from "../../assets/card3.jpg";
import card4 from "../../assets/card4.jpg";
import card5 from "../../assets/card5.jpg";
import card6 from "../../assets/card6.jpg";

 const cards = [
    {
        title: 'VICTORY FOLIO',
        category: ['WEB APP', 'FEATURED'],
        description: 'Lorem ipsum dolro sit amt, consestcuer elit',
        image: card1,
        id: 1

    },
    {
        title: 'IN WHOLENESS PRACTICE',
        category: 'WEB APP',
        description: 'Lorem ipsum dolro sit amt, consestcuer elit',
        image: card2,
        id: 2
    },
    {
        title: 'TRIBE HAIRCARE',
        category: ['WEB APP', 'MOBILE APP', 'FEATURED'],
        description: 'Lorem ipsum dolro sit amt, consestcuer elit',
        image: card3,
        id: 3
    },
    {
        title: 'TRIBE SKINCARE',
        category: ['WEB APP', 'MOBILE APP'],
        description: 'Lorem ipsum dolro sit amt, consestcuer elit',
        image: card4,
        id: 4
    },
    {
        title: 'BUG TRACKER',
        category: 'WEB APP',
        description: 'Lorem ipsum dolro sit amt, consestcuer elit',
        image: card5,
        id: 5
    },
    {
        title: 'PATIENT PORTAL',
        category: 'MOBILE APP',
        description: 'Lorem ipsum dolro sit amt, consestcuer elit',
        image: card6,
        id: 6
    }

];

export default cards;

Answer 1

You can use Array.filter() method, also change the inputs values to match categories as they are defined in cards with uppercase and spaces between

const handleBtns = (e) => {
const word = e.target.value;
if (word === "All") setState(cards);
else {
  const filteredCards = cards.filter(({ category }) => {
    return category.includes(word);
  });
  setState(filteredCards);
}

};

Answer 2

Here's a sandbox with my solution using the useState hook: codesandbox

I would note:

1. When comparing string values, make sure that they use the same format/capitalization:

'Feature' === 'FEATURE' //false 

'FEATURE' === 'FEATURE' //true 

2. Normalize data in your objects. JavaScript is dynamically typed, so it's ok to do this:

card.category = 'string'
card.category = ['STRING']

Making sure data types are the same removes the need to do extra checks in your filter function.