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File Reader JS
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>file reader</title> | |
| </head> | |
| <body> | |
| <h1>Let me read your file data</h1> | |
| <input id="files" type="file"> | |
| <textarea id="dataToShow"></textarea> | |
| <div id="list"></div> | |
| <script> | |
| // Check for the various File API support. | |
| if (window.File && window.FileReader && window.FileList && window.Blob) { | |
| console.log('Great success! All the File APIs are supported. i.e. window.File && window.FileReader && window.FileList && window.Blob'); | |
| } else { | |
| console.log('The File APIs are not fully supported in this browser.'); | |
| } | |
| // this function will be triggered when user selects a file | |
| function handleFileSelect(evt) { | |
| console.log(evt); | |
| var file = evt.target.files[0]; // FileList object | |
| // files is a FileList of File objects. List some properties. | |
| let reader = new FileReader(); | |
| reader.onload = function (evt) { | |
| document.getElementById("dataToShow").value = evt.target.result; | |
| }; | |
| reader.onerror = function (evt) { | |
| console.error("An error ocurred reading the file",evt); | |
| }; | |
| reader.readAsText(file, "UTF-8"); | |
| } | |
| //triggers | |
| document.getElementById('files').addEventListener('change', handleFileSelect, false); | |
| </script> | |
| </body> | |
| </html> |
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