read a file js code example
Example 1: read file javascript
// As with JSON, use the Fetch API & ES6
fetch('something.txt')
.then(response => response.text())
.then(data => {
// Do something with your data
console.log(data);
});
Example 2: Read files in JavaScript
function readImage(file) { //function readImage(file) {
// Check if the file is an image.
if (file.type && !file.type.startsWith('image/')) {
console.log('File is not an image.', file.type, file);
return;
}
const reader = new FileReader();
reader.addEventListener('load', (event) => {
img.src = event.target.result;
});
reader.readAsDataURL(file);
} Check if the file is an image. if (file.type && !file.type.startsWith('image/')) { console.log('File is not an image.', file.type, file); return; } const reader = new FileReader(); reader.addEventListener('load', (event) => { img.src = event.target.result; }); reader.readAsDataURL(file);}