(Node.js) Set the Email Date Header to the Current System Date/Time

Demonstrates how to set the Date header field of an email to the computer's current date/time. Note: When an email object is instantiated, the Date header field is automatically added and initialized to the current system date/time. The need to explicitly set the Date header could arise when loading an email from a .eml.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    var email = new chilkat.Email();

    // At this point, a new email object has been instantiated, and it
    // already has a Date header field containing the current date/time.
    console.log("Date: " + email.EmailDateStr);

    // We can also get the Date header like this:
    console.log("Date: " + email.GetHeaderField("Date"));

    // Load a .eml into the email object:
    var success = email.LoadEml("myEmlFiles/someEmail.eml");
    if (success !== true) {
        console.log(email.LastErrorText);
        return;
    }

    // Show the Date that was in the .eml
    console.log("Date: " + email.EmailDateStr);

    // Now the Date header contains whatever was in the .eml
    // Let's update it to the current system date/time..

    var dateTime = new chilkat.CkDateTime();

    dateTime.SetFromCurrentSystemTime();

    success = email.SetDt(dateTime);
    if (success !== true) {
        console.log(email.LastErrorText);
        return;
    }

    // Now show that the Date is the current system time:
    console.log("Date: " + email.EmailDateStr);
    console.log("Date: " + email.GetHeaderField("Date"));

}

chilkatExample();