Instant Image Upload Preview | HTML & JavaScript
In this video we will learn how to preview an image before upload. How? Its easy we are going to use JavaScript's File Reader API to the file directly from the file input in a format which will allow us to view even before upload is done. To implement this functionality we will be using technologies such as HTML and Vanilla JS.
How does it works?
Here's a simplified explanation. JavaScript Provides an API for reading a file which we will be using to implement our preview script.
1. We have a file input which we will be used for selecting file.
2. Upon selection of file a FileReader object is initialized to read the file dataURL/base64 format.
3. After reading we replace the src attribute of image element.
That's it. You've learnt how to make instant upload preview.
Source Code : https://codepen.io/sidtheangel/pen/WV...
En esta página del sitio puede ver el video en línea Instant Image Upload Preview | HTML & JavaScript de Duración hora minuto segunda en buena calidad , que subió el usuario SoySudhanshu Codes 29 julio 2019, comparta el enlace con amigos y conocidos, en youtube este video ya ha sido visto 4,566 veces y le gustó 98 a los espectadores. Disfruta viendo!
