JavaScript

const hamburger = document.getElementsByClassName('hamburger')[0]
const menu = document.getElementsByClassName('menu')[0]
hamburger.addEventListener('click', () => {
menu.classList.toggle('active')
})

<nav class="navbar">
    <div class="logo">MY LOGO</div>
    <a class="hamburger" >
      
      
      
    </a>
    <div class="menu">
        <ul> 
          <li><a href="#home">Home</a></li>
          <li><a href="#about">About</a></li>
          <li><a href="#donate">Donate</a></li>
          <li><a href="#download">Download</a></li>
          <li><a href="#howto">How</a></li>
          <li><a href="#reports">Reports</a></li>
          <li><a href="#contact">Contact</a></li>
        </ul>
    </div>
</nav>

    <label class="control-label">Phone</label>
    {{masked-input mask='(999) 999-9999'
                   value=model.Address.Phone
                   input-format='regex'
                   input-filter='\(*[0-9]{3}\) [0-9]{3}-[0-9]{4}'
                   input-filter-message='Phone number is not valid.'
                   class='form-control phone masked'
                   maxlength="14"}}
</div>

export default () => {
    IMS.registerComponent("masked-input", {
        tagName: 'input',
        attrParams: ['required', 'title', 'name', 'placeholder'],
        loaded: false,
        prop: Ember.observer(
            'required',
            'title',
            'name',
            'placeholder',
            'value',
            function () {
                var scope = this;
                $(this.element).val(Ember.get(scope, 'value'));
                var stamp = new Date();
                if (Ember.get(scope, 'loaded') == true) {

                    var element = $(this.element);
                    var attrs = Ember.get(this, 'attrParams');
                    attrs.forEach(function (attr) {
                        var value = Ember.get(scope, attr);
                        if (value == '' | value == null) {
                            element.removeAttr(attr);
                        } else {
                            element.attr(attr, value);
                        }
                    })
                }
            }),
        observeMask: Ember.observer('mask', function () {
            var scope = this;
            $(this.element).inputmask({
                mask: Ember.get(scope, 'mask')
            });
        }),
        didInsertElement: function () {
            var scope = this;

            setTimeout(function () {
                var value = Ember.get(scope, 'value');
                var element = $(scope.element);
                var change = function () { Ember.set(scope, 'value', element.val()); }
                element.val(Ember.get(scope, 'value'));
                element.attr('type', 'text');
                element.change(change);
                // element.keypress(change);
                Ember.set(scope, 'loaded', true);
                scope.observeChanges();
                element.inputmask({
                    mask: Ember.get(scope, 'mask')
                });

                element.attr('input-format', Ember.get(scope, 'input-format'));
                element.attr('input-filter', Ember.get(scope, 'input-filter'));
                element.attr('input-filter-message', Ember.get(scope, 'input-filter-message'));

            }, 250);
        }
    })
}

My assignment asks for this step that I mentioned in the title, but I have 3 days trying to make it,
I don't know how to do it.here is my code in GitHub:- 
https://github.com/HamzaSamiHussein/BusMall/tree/busMall

domtoimage.toPng(document.querySelector("#map"))
    .then(function (dataUrl) {
        var boundsOnly = map.getBounds();
        let topLeft = boundsOnly.getNorthWest();
        let topRight = boundsOnly.getNorthEast();
        let bottomLeft = boundsOnly.getSouthWest();
        let bottomRight = boundsOnly.getSouthEast();

        var currBBOXpoints = { x1y1: map.latLngToLayerPoint(topLeft), x2y2: map.latLngToLayerPoint(topRight), x3y3: map.latLngToLayerPoint(bottomRight), x4y4: map.latLngToLayerPoint(bottomLeft) };
        var pW = currBBOXpoints.x2y2.x - currBBOXpoints.x1y1.x;
        var pH = currBBOXpoints.x3y3.y - currBBOXpoints.x1y1.y;

        currBBOXpoints.pW = pW; //calculated the width of captured area
        currBBOXpoints.pH = pH; //calculated the height of captured area

        var i = new Image();
        i.onload = function () { //calculating captured image's actual width, height

            $.ajax({
                type: 'post',
                url: '/externalapi',
                data: JSON.stringify(dataUrl),
                contentType: "application/json",
                dataType: "json",
                success: function (resultData) {
                    resultData["iW"] = i.width; //captured image width
                    resultData["iH"] = i.height; //captured image height
                    resultData["currBBOXpoints"] = currBBOXpoints; //captured area bounds
                    drawRects(resultData);
                    //NOTE: Captured image's width and height are bigger than width and height of captured area (don't know why)
                }
            });
    };
    i.src = dataUrl;
});

function drawRects(rectData) {

    var scale = Math.max(rectData.currBBOXpoints.pW / rectData['iW'], rectData.currBBOXpoints.pH / rectData['iH']);

    var shifted_x = rectData.currBBOXpoints.pW / 2 - rectData['iW'] / 2 * scale;
    var shifted_y = rectData.currBBOXpoints.pH / 2 - rectData['iH'] / 2 * scale;

    rectData.od.forEach(rc => {
        var modifiedX = Number(rc['x']) * scale + shifted_x;
        var modifiedY = Number(rc['y']) * scale + shifted_y;
        var modifiedW = (modifiedX + rc['w'])
        var modifiedH = (modifiedY + rc['h'])


        let point3 = map.layerPointToLatLng(L.point(modifiedX, modifiedY));
        let point4 = map.layerPointToLatLng(L.point(modifiedW, modifiedH));

        var rectBounds = [[point3.lat, point3.lng], [point4.lat, point4.lng]];
        var boundingBox = L.rectangle(rectBounds, { color: "yellow", weight: 1, name: "rect", fillOpacity: 0.10 });

        map.addLayer(boundingBox);

    });
}

let object_literal1 ={
    fullName : "shanu1",
    name : () => { 
        return this.fullName
    },
    greeting : (message) => console.log(message + " "+ this.name())
}
object_literal1.greeting("Welcome")

let person = {
    firstName: "John",
    lastName : "Doe",
    id     : 5566,
    fullName : function() {
      return this.firstName + " " + this.lastName;
    }
  }
  console.log(person.fullName()) //prints John Doe

let person = {
    firstName: "John",
    lastName : "Doe",
    id     : 5566,
    fullName : () => {
      return this.firstName + " " + this.lastName;
    }
  }
  console.log(person.fullName()) //prints undefined undefined