How to determine if user selected a file for file upload?

slolife_698 0
Viewed 105252

If I have a 

<input id="uploadFile" type="file" />

tag, and a submit button, how do I determine, in IE6 (and above) if a file has been selected by the user.

In FF, I just do:

var selected = document.getElementById("uploadBox").files.length > 0;

But that doesn't work in IE.

upload html javascript
4 Answers

This works in IE (and FF, I believe):

if(document.getElementById("uploadBox").value != "") {
   // you have a file
}
JasonBunting_17900

You can use:

    var files = uploadFile.files;

    if (files.length == 0) { console.log(true) } else { console.log(false) }
    if (files[0] == undefined) { console.log(true) } else { console.log(false) }
    if (files[0] == null) { console.log(true) } else { console.log(false) }

All three give the same result.

user_98076380
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