JavaScript - Simple Display Post Message

Submitted by razormist on Monday, November 25, 2019 - 11:22.

In this tutorial we will create a Simple Display Post Message using JavaScript. This code will post a message dynamically when the user click the send button. The code use onclick() function to call a method that can post a message to a div using appendChild() as dot notation in the parent element div. You can apply this script to your code to make your transaction faster, it is a user-friendly program feel free to modify it. We will use JavaScript to add some new feature to the website interface by actually written into an HTML page. It is what gives your page a different interactive elements and animation that engage a user.

Getting Started:

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 hmtl>
<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>
</a>            </div>
        </nav>
        <div class="col-md-3"></div>
        <div class="col-md-6 well">
                <h3 class="text-primary">JavaScript - Simple Display Post Message</h3>
                <hr style="border-top:1px dotted #ccc;"/>
                <div class="col-md-4">
                        <form>
                                <div class="form-group">
                                        <label>Name</label>
                                        <input type="text" id="name" class="form-control" />
                                </div>
                                <div class="form-group">
                                        <label>Message</label>
                                        <textarea id="message" class="form-control" style="resize:none; height:150px;">
                                        </textarea>
                                </div>
                                <center><button type="button" class="btn btn-primary" onclick="postMessage();">Send</button></center>
                        </form>
                </div>
                <div class="col-md-8">
                        <div class="alert alert-success">Message List</div>
                        <div id="result"></div>
                </div>
        </div>
<script src="js/script.js"></script>    
</body> 
</html>

Creating the Script

This code contains the script of the application. This code will post a message when the button is clicked. To do this just copy and write these block of codes as shown below inside the text editor and save it as script.js inside the js directory

function postMessage(){
        var name=document.getElementById('name').value;
        var message=document.getElementById('message').value;
 
        if(name =="" || message ==""){
                alert("Please enter something first!");
        }else{
                var parent=document.createElement('div');
                var el_name=document.createElement('h5');
                var el_message=document.createElement('p');
                var el_line=document.createElement('hr');
                var txt_name=document.createTextNode(name);
                var txt_message=document.createTextNode(message);
                el_name.appendChild(txt_name);
                el_message.appendChild(txt_message);
                el_line.style.border='1px dotted #ccc';
                parent.appendChild(el_name);
                parent.appendChild(el_line);
                parent.appendChild(el_message);
                parent.setAttribute('class', 'well');
                document.getElementById('result').appendChild(parent);
 
                document.getElementById('name').value="";
                document.getElementById('message').value="";
        }
 
}

There you have it we successfully created a Simple Display Post Message using JavaScript. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

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