Basic:

var Device = function(opt) {
  this.id = opt.id;
  this.type = opt.type;
};

Device.prototype.getId = function() {
  return this.id;
};

Device.prototype.getType = function() {
  return this.type;
}

var Relay = function(opt) {

  // call the inherited constructor
  Device.call(this, opt);

  this.code = opt.code;
};

Relay.prototype.getCode = function() {
  return this.code;
};

// Relay will inherit Device 
Relay.prototype = Object.create(Device.prototype);

var device = new Relay({id: 123, type: 'test', code:'RL-01'});

console.log(device);
console.log(device instanceof Device); // true
console.log(device instanceof Relay);  // true

With some more structure:

var Device = (function() {

    function F(opt) {
        this.id = opt.id;
        this.type = opt.type;
    }

    F.prototype.getId = function() {
        return this.id;
    };

    F.prototype.getType = function() {
        return this.type;
    }

    return F;
}());

var Relay = (function() {

    function F(opt) {
        // call the inherited constructor
        Device.call(this, opt);

        this.code = opt.code;
    }

    F.prototype.getCode = function() {
        return this.code;
    }

    // Relay will inherit Device 
    F.prototype = Object.create(Device.prototype);

    return F;
}());

var device = new Relay({id: 123, type: 'test', code:'RL-01'});

console.log(device);
console.log(device instanceof Device); // true
console.log(device instanceof Relay);  // true

function ajaxGet(url, cb){
    var req = new XMLHttpRequest();

    req.onload = function() {
        cb(req.status, req.response);
    };

    req.open("GET", url);
    req.send();
}

ajaxGet('https://httpbin.org/get', function(status, res) {
    console.log(status , JSON.parse(res));
})

stackoverflow

find is the common tool for this kind of task:

find ./my_dir -mtime +10 -type f -delete

EXPLANATIONS

• ./my_dir your directory (replace with your own)
• -mtime +10 older than 10 days
• -type f only files
• -delete no surprise. Remove it to test your find filter before executing the whole command!

And take care that ./my_dir exists to avoid bad surprises!

We have 3 major JavaScript alternatives to Laravel:

• Next.js
• Meteor
• AdonisJS

article

To achieve this, ssl module has to be enabled and apache needs to be told, how to handle traffic from port 443, this is done by enabling default-ssl site.

$ sudo a2enmod ssl
$ sudo a2ensite default-ssl
$ sudo service apache2 restart

Firewall

If you have firewall enabled, you should allow incoming TCP connection on port 443.

$ sudo ufw allow 443/tcp

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