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How To Do Auto Search Using JavaScript

In this code we will tackle about Auto Search using JavaScript. The program will enable to automatically search a row data. You are free to modify, and use this code. To learn more about this, just follow the steps below.

Getting started:

First you have to download bootstrap framework, this is the link for the bootstrap that I used for the layout design https://getbootstrap.com/.

The Main Interface

This code contains the interface of the application. To create this just write these block of code inside the text editor and save this as index.html.

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
        <link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
    </head>
<body>
    <nav class="navbar navbar-default">
        <div class="container-fluid">
            <a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
        </div>
    </nav>
    <div class="col-md-3"></div>
    <div class="col-md-6 well">
        <h3 class="text-primary">Auto Search Using JavaScript</h3>
        <hr style="border-top:1px dotted #ccc;"/>
        <div class="col-md-4">
            <div class="form-group">
                <label>Enter a name</label>
                <div class="input-group">
                    <div class="input-group-addon"><span class="glyphicon glyphicon-search"></span></div>
                    <input type="text" id="search" placeholder="Search here..." onkeyup="autoSearch()" class="form-control"/>
                </div>
            </div>
        </div>
 
        <table class="table table-bordered">
            <thead class="alert-info">
                <tr>
                    <th>Member List</th>
                </tr>
            </thead>
            <tbody id="result"></tbody>
        </table>
        <ul class="list-group" id="list"></ul>
 
    </div>
<script src="js/script.js"></script>
</body>
</html>

Creating the Script

This code contains the script of the application. The code will automatically search a specific keyword. To do this just copy and write these block of codes inside the text editor, then save it as script.js inside the js folder.

var members = ['Tony Stark', 'Jin Mori', 'Luke Cage'];
 
displayMember();
 
function displayMember(){
    members.sort(function(a,b){
        if(a < b){
            return -1;
        }
 
        if(a > b){
            return 1;
        }
 
        return 0;
    });
 
    data = "";
 
    for(var i=0; i < members.length; i++){
        data += "<tr><td>"+members[i]+"</td></tr>";
    }
 
    document.getElementById('result').innerHTML = data;
}
 
function autoSearch(){
    var search=document.getElementById('search').value.toLowerCase();
    var parent=document.getElementById("result");
    var children=parent.getElementsByTagName('tr');
 
    for(var i=0; i<children.length; i++){
        var keyword=children[i].innerText;
        if(keyword.toLowerCase().indexOf(search)>-1){
            children[i].style.display="";
        }else{
            children[i].style.display = "none";
        }
    }
 
}

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