Node.js

Get the Last-Modified Date Before HTTP Download

See more HTTP Examples

Demonstrates how to send a HEAD request to get the last-modified date of a file on a web server (without downloading the file). Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var http = new chilkat.Http();

    var resp = new chilkat.HttpResponse();
    success = http.HttpNoBody("HEAD","https://www.chilkatsoft.com/hamlet.xml",resp);
    if (success == false) {
        console.log(http.LastErrorText);
        return;
    }

    // Examine the response header.
    console.log(resp.Header);

    // Here is a sample response header:

    // 	Content-Length: 279658
    // 	Content-Type: text/xml
    // 	Last-Modified: Thu, 12 May 2016 15:14:08 GMT
    // 	Accept-Ranges: bytes
    // 	ETag: "c1cd8bee60acd11:0"
    // 	Server: Microsoft-IIS/8.5
    // 	X-Powered-By: ASP.NET
    // 	X-Powered-By-Plesk: PleskWin
    // 	Date: Thu, 25 Jul 2019 16:40:54 GMT

    // Get the Last-Modified header.
    var lastModStr = resp.GetHeaderField("Last-Modified");
    // If the header exists...
    if (resp.LastMethodSuccess == true) {
        // Parse the RFC822 format date/time string
        var ckdt = new chilkat.CkDateTime();
        ckdt.SetFromRfc822(lastModStr);

        // If we want to access individual date/time parts (in the local timezone)
        var dt = new chilkat.DtObj();
        ckdt.ToDtObj(true,dt);

        console.log("day/month/year = " + dt.Day + "/" + dt.Month + "/" + dt.Year);
    }


}

chilkatExample();