Web Search Bar Implementation Using Javascript Conditional Flow

Last Updated : 25 Jul, 2024

Given a list of items and the task is to filter through the items and return the best match using the search bar. There are several approaches to implement this but, we will be using a simple if-else statement to implement our search bar.

Approach:

Create a folder called gfgSearchBar.
Open the folder in your desired IDE or IDLE.
Create a html file called approachOne.html
Paste the below code into the html file.

HTML

<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Simple Search Bar</title>
    <style>
        #searchBar{
            font-size: 20px;
        }
        .movieWrapper {
            display: none;
            text-align: left;
            margin-left: 20%;
        }
        .search{
            text-align: center;
            padding-top: 15%;
            width: 30%;
            margin-left: 35%;
        }
        h1{
            margin-bottom: 0%;
        }
        p{
            margin-top: 0%;
        }
    </style>
</head>
  
<body>
    <div class=search>
        <h1>GFG Movie Search</h1>
        <p>item search example</p>
        <input type="text" id="searchBar" placeholder="Search for a movie...">
        <div class="movieWrapper">Inception</div>
        <div class="movieWrapper">Interstellar</div>
        <div class="movieWrapper">The Dark Knight</div>
        <div class="movieWrapper">Memento</div>
        <div class="movieWrapper">Dunkirk</div>
    </div>
    
    <script>
        document.addEventListener('DOMContentLoaded', () => {
            const getSearchBar = document.querySelector('#searchBar');
            const getAllMovies = document.querySelectorAll('.movieWrapper');

            getSearchBar.addEventListener('keyup', (e) => {
                getAllMovies.forEach(movie => {
                    if (movie.innerText.toLowerCase().includes(e.target.value.toLowerCase())) {
                        movie.style.display = 'block';
                    } else {
                        movie.style.display = 'none';
                    }
                });
            });
        });
    </script>
</body>
  
</html>

Output:

Explanation of the code inside the script tag:

document.addEventListener(‘DOMContentLoaded’); This is a document event that gets executed or triggered immediately the html file gets loaded on your browser. Operations inside this event block doesn’t get executed until the html file is completely loaded to the DOM.
const getSearchBar = document.querySelector(‘#searchBar’); We simply got the search bar element and pass it to getSearchBar variable.
const getAllMovies = document.querySelectorAll(‘.movieWrapper’); We simply got all the movie divs and pass then to getAllMovies variable. Note that getAllMovies is a Nodelist of elements which is an Array look alike not an Array.

getSearchBar.addEventListener(): We simply added a keyup event listener to the search bar.

getAllMovies.forEach(movie => {
    if (movie.innerText.toLowerCase()
    .includes(e.target.value.toLowerCase())) {
        movie.style.display = 'block';
        return movie;
    }
    else {
        movie.style.display = 'none';
    }
});

This block of code simply means the user types into the search bar are present in the movie text content, then style that movie box to be displayed in blocks and return all of them. Else don’t return any movie block.

Creating Progress Bar using JavaScript

emmanuel_onah

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Web Search Bar Implementation Using Javascript Conditional Flow

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