How to useelement.files.length property in JavaScript in Javascript
To check file is selected or not. If element.files.length property returns 0 then the file is not selected otherwise the file is selected.
Example: This example implements the above approach.
html
<!DOCTYPE html><html lang="en"><head> <title>Check If Inputs are Empty using jQuery</title><body> <h1 style="color:green;"> w3wiki </h1> <p id="GFG_UP" style="font-size: 15px; font-weight: bold;"> </p> <input type="file" name="File" id="file" /> <br><br> <button onclick="GFG_Fun()"> click here </button> <p id="GFG_DOWN" style="color:green; font-size: 20px; font-weight: bold;"> </p> <script> let up = document.getElementById('GFG_UP'); let down = document.getElementById('GFG_DOWN'); let file = document.getElementById("file"); up.innerHTML = "Click on the button to see" + " if any file is selected"; function GFG_Fun() { if (file.files.length == 0) { down.innerHTML = "No files selected"; } else { down.innerHTML = "Some file is selected"; } } </script></body></html> |
Output:
How to check input file is empty or not using JavaScript/jQuery ?
Given an HTML document containing an input element, the task is to check whether an input element is empty or not with the help of JavaScript.
These are the two approaches to check input file is empty or not using JavaScript/jQuery:
Table of Content
- Using element.files.length property in JavaScript
- Using element.files.length property in jQuery