lastModified returns "Invalid Date"

Question

I'm trying to display the last updated time of a file (not my html file, another file).

HTML:

<p>Last updated: <span id="lastUpdate"></span></p>

JavaScript:

var file = 'data/myFile.csv';
var modifiedTime = new Date(file.lastModified);
document.getElementById('lastUpdate').innerHTML = modifiedTime;

When I run it, it just displays the following; (with no errors in the console)

Last updated: Invalid Date

I'm obviously missing something, probably something small.

Edit:

My files are setup like below:

site/index.html
site/data/myFile.csv
site/js/lastUpdate.js

Possible duplicate of [Is it possible to retrieve the last modified date of a file using Javascript?](https://stackoverflow.com/questions/2313620/is-it-possible-to-retrieve-the-last-modified-date-of-a-file-using-javascript) — devlin carnate, Oct 25 '19 at 18:39
okay so where does this file actually exists since all you really have is a string in your current code — epascarello, Oct 25 '19 at 18:45

score -1 · Answer 1 · answered Oct 25 '19 at 18:37

-1

Yes - when you declare variable

var file = 'data/myFile.csv'

in file variable you have only file path - not file content (to read it you can use fetch). The second thing- when you read file content - then you should parse it - to read proper csv column

answered Oct 25 '19 at 18:37

Kamil Kiełczewski

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lastModified returns "Invalid Date"

Edit:

1 Answers1