Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

URGENT: How to check if file input field is empty

Posted on 2008-10-22
3
Medium Priority
?
1,926 Views
Last Modified: 2010-08-05
Hi EE

I have written a code in html which asks the user to input a file. When the user submits the form I want to check whether the user has input the form. How can I do it?
The input command in HTML is
<INPUT TYPE=FILE id="Intfile" NAME="IntFile">

Thank you
0
Comment
Question by:tanpreetsingh
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 82

Accepted Solution

by:
hielo earned 2000 total points
ID: 22779480
try:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
 "http://www.w3.org/TR/html4/loose.dtd"> 
<html>
<head>
<title></title>
<script type="text/javascript">
function checkForm(f){
	if( f.IntFile.value=="" )
	{
		alert("You must select a file");
		return false;
	}
return true;
}
</script>
</head>
<body>
<form onsubmit="return checkForm(this)">
<INPUT TYPE='FILE' id="Intfile" NAME="IntFile">
<INPUT TYPE='submit' value="Submit" NAME="Submit">
</form>
</body>
</html>

Open in new window

0
 

Author Closing Comment

by:tanpreetsingh
ID: 31508876
Excellent solution. Thank you!
0
 

Author Comment

by:tanpreetsingh
ID: 22779634
Thank you. It worked smoothly.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article demonstrates how to create a simple responsive confirmation dialog with Ok and Cancel buttons using HTML, CSS, jQuery and Promises
In this blog, we’ll look at how improvements to Percona XtraDB Cluster improved IST performance.
In this tutorial viewers will learn how to position overlapping items using z-index in CSS. They will also learn the restrictions on the z-index property.  Create a new HTML document with an internal stylesheet.: Create a div in CSS and name it Red.…
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …

722 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question