Javascript - How to Append JSON Objects

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In this tutorial we will create a How to append JSON Objects using Javascript. JavaScript is a scripting or programming language that allows you to implement complex things on web pages. It is a text-based programming language meant to run as part of a web-based application. It is an interpreted programming language that has a capabilities of Object-Oriented. So Let's do the coding...

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/.

Creating The Interface

This is where we will create a simple form for our application. To create the forms simply copy and write it into your text editor, then save it as index.html.

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
  5. <link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
  6. </head>
  7. <nav class="navbar navbar-default">
  8. <div class="container-fluid">
  9. <a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
  10. </div>
  11. </nav>
  12. <div class="col-md-3"></div>
  13. <div class="col-md-6 well">
  14. <h3 class="text-primary">Javascript - How to append JSON Objects</h3>
  15. <hr style="border-top:1px dotted #ccc;"/>
  16. <div class="col-md-3"></div>
  17. <div class="col-md-6">
  18. <div class="form-group">
  19. <label>Firstname</label>
  20. <input type="text" id="firstname" class="form-control"/>
  21. </div>
  22. <div class="form-group">
  23. <label>Lastname</label>
  24. <input type="text" id="lastname" class="form-control"/>
  25. </div>
  26. <div class="form-group">
  27. <label>Address</label>
  28. <input type="text" id="address" class="form-control"/>
  29. </div>
  30. <div class="form-group">
  31. <button type="button" onclick="saveData()" class="btn btn-primary form-control"><span class="glyphicon glyphicon-export"></span> Append To JSON</button>
  32. </div>
  33. </div>
  34. <table class="table table-bordered">
  35. <tr>
  36. <th>Firstname</th>
  37. <th>Lastname</th>
  38. <th>Address</th>
  39. </tr>
  40. </thead>
  41. <tbody id= "result"></tbody>
  42. </table>
  43. </div>
  44. </body>
  45. <script src="js/script.js"></script>
  46. </html>

Creating the Script

This code contains the script of the application. This code will append all the data inputs to a temporary json database. 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 folder.

  1. var data = [];
  2.  
  3. function saveData(){
  4. var firstname = document.getElementById("firstname");
  5. var lastname = document.getElementById("lastname");
  6. var address = document.getElementById("address");
  7.  
  8. if(firstname.value == "" || lastname.value == "" || address.value == ""){
  9. alert("Please complete the required field first!");
  10. }else{
  11. var obj = {
  12. 'firstname': firstname.value,
  13. 'lastname': lastname.value,
  14. 'address': address.value,
  15. };
  16.  
  17. data.push(obj);
  18.  
  19. var table = "" ;
  20.  
  21. for(var i in data){
  22. table += "<tr>";
  23. table += "<td>"
  24. + data[i].firstname +"</td>"
  25. + "<td>" + data[i].lastname +"</td>"
  26. + "<td>" + data[i].address +"</td>" ;
  27. table += "</tr>";
  28. }
  29.  
  30. document.getElementById("result").innerHTML = table;
  31. firstname.value = "";
  32. lastname.value = "";
  33. address.value = "";
  34.  
  35. }
  36. }

There you have it we successfully created a How to append JSON Objects 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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