1.
TYPE RECOGNITION

2.
var html = function (value) {
if (typeof value == "string") {
element.innerHTML = value;
}
if (typeof value == "function") {
element.innerHTML = value();
}
if (value == null) {
return element.innerHTML;
}
return element;
};

3.
var a = {
value: "I am an object",
toString: function () {
return this.value;
}
};
var b = new String("I am a string");
alert(a);
el.html(a);
alert(b);
el.html(b);

4.
var html = function (value) {
if (typeof value == "function") {
element.innerHTML = value();
} else if (value == null) {
return element.innerHTML;
} else {
element.innerHTML = String(value);
}
return element;
};

5.
var extendWithName = function (object, name) {
if (typeof object == "object") {
object.name = name;
}
};

6.
extendWithName(null, "null");
var a = function () {};
extendWithName(a, "function");

7.
WHAT IS YOUR TYPE?

8.
ARE YOU AN OBJECT?

9.
ARE YOU A NUMBER?

10.
var is = function (o, type) {
type = (type + "").toLowerCase();
return (type == "object" && o === Object(o)) ||
(type == "undefined" && typeof o == type) ||
(type == "null" && o == null) ||
Object.prototype.toString.call(o)
.slice(8, -1).toLowerCase() == type;
};

11.
THANK YOU