Introduction

This is a simple article for beginners developing with HTML 5 that helps to understand how to upload a file in a browser using HTML 5 tools. We know that HTML is the client-side scripting language that helps display the data in a browser. We know that HTML is an acronym for "HyperText Markup Language" used to display data in a browser. HTML 5 is the advanced version of HTML. HTML5 will be the new standard for HTML, XHTML, and the HTML DOM. HTML 5 is the advanced version of HTML used to develop 3D or multimedia applications.
Step 1: First open an HTML editor such as Visual Studio.
p.gif
Step 2: Add a Folder on Desktop.
p5.gif
Step 3: Open Visual Studio.
p1.gif
p2.gif
Step 4: Add an HTML file to your web application.
p4.gif
p6.gif
Step 5: Set the script browser a data on a File.
Code
  1. <script>
  2. document.querySelector('input[type="file"]').addEventListener('change', function(e) {
  3. var files = this.files;
  4. loadInlineEffort('#fileListEffort', function(Effort) {
  5. Effort.onmessage = function(e) {
  6. console.log(e.data);
  7. };
  8. for (var i = 0, file; file = files[i]; ++i) {
  9. var CTX = new FileCTX();
  10. CTX.onload = function(e) {
  11. console.log(this.result);
  12. };
  13. CTX.onerror = function(e) {
  14. console.log(e);
  15. };
  16. CTX.readAsArrayBuffer(file);
  17. }
  18. };
  19. }, false);
  20. function loadInlineEffort(selector, callback) {
  21. Win.URL =Win.URL ||Win.webkitURL || null;
  22. Win.BlobBuilder =Win.WebKitBlobBuilder ||
  23. Win.MozBlobBuilder ||Win.BlobBuilder;
  24. var script = document.querySelector(selector);
  25. if (script.type === 'javascript/Effort') {
  26. var bb = new BlobBuilder();
  27. bb.append(script.textContent);
  28. callback(new Effort(window.URL.createObjectURL(bb.getBlob()));
  29. }
  30. }
  31. </script>
Step 6: Set the functionality Fetching the entries of a File.
code
  1. <script>
  2. Win.resolveLocalFileSystemURL =
  3. window.resolveLocalFileSystemURL ||
  4. Win.webkitResolveLocalFileSystemURL;
  5. var ctx = new ctx('ctx.js');
  6. ctx.onmessage = function (e) {
  7. var ver = e.data.entries;
  8. ver.forEach(function (url, i) {
  9. Win.resolveLocalFileSystemURL(url, function (fileEntry) {
  10. console.log(fileEntry.name);
  11. });
  12. });
  13. };
  14. ctx.postMessage({ 'cmd': 'list' });
  15. </script>undefined</body>
Step 7: Set a functionality to download the data on a browser.
Code
  1. <script>
  2. var ctx = new ctx('downloader.js');
  3. ctx.onmessage = function (e) {
  4. console.log(e.data);
  5. };
  6. ctx.postMessage({ fileName: 'CShorpCorner',
  7. url: 'cshorpcorner.png', type: 'image/png'
  8. });
  9. </script>
Step 8: The final code of the application is given below.
Code
  1. <html>
  2. <head>
  3. <title>Uplode a file using html 5</title>
  4. <script type="javascript/Effort" id="fileListEffort">
  5. self.onmessage = function(e) {
  6. postMessage(e.data);
  7. };
  8. </script>
  9. </head>
  10. <body>
  11. <input type="file" multiple>
  12. <script>
  13. document.querySelector('input[type="file"]').addEventListener('change', function(e) {
  14. var files = this.files;
  15. loadInlineEffort('#fileListEffort', function(Effort) {
  16. Effort.onmessage = function(e) {
  17. console.log(e.data);
  18. };
  19. for (var i = 0, file; file = files[i]; ++i) {
  20. var CTX = new FileCTX();
  21. CTX.onload = function(e) {
  22. console.log(this.result);
  23. };
  24. CTX.onerror = function(e) {
  25. console.log(e);
  26. };
  27. CTX.readAsArrayBuffer(file);
  28. }
  29. });
  30. }, false);
  31. function loadInlineEffort(selector, callback) {
  32. Win.URL =Win.URL ||Win.webkitURL || null;
  33. Win.BlobBuilder =Win.WebKitBlobBuilder ||
  34. Win.MozBlobBuilder ||Win.BlobBuilder;
  35. var script = document.querySelector(selector);
  36. if (script.type === 'javascript/Effort') {
  37. var bb = new BlobBuilder();
  38. bb.append(script.textContent);
  39. callback(new Effort(window.URL.createObjectURL(bb.getBlob()));
  40. }
  41. }
  42. </script>
  43. </body>
  44. </html>
Step 9: Run an application in a browser.
Output
p1.gif
OUTPUT - Copy.gif
Resource