codecore

Day.27md

#javascript

var count = function(string){
    var newString = string.split(" ");
    myObject = {};
    for(var i = 0; i < newString.length; i++){
        myObject[newString[i]] = newString[i].length
    }
}

console.log(count("Hello Tony"))



var returnZero = function(x) {
    return x - x;
};

console.log(returnZero(5));


var user = function(userObject) {
    console.log( userObject.name + "is" + userObject.age + "years old." );
};




## typeof

typeof(123)
 "number"
 
 
typeof({a: 1, b: 2});
"object"


Array.isArray([1,2,3,4,5]);
true

var car = {
  speed: 200,
  drive: function(){
    console.log("vroomm")
  }
}

car.speed;
200

car.drive();
Vroooom





var car = {
  speed: 200,
  drive: function(){
    console.log("vroomm");
  },
  stop: function(){
      console.log("screeetch");
  }
}

car.stop()


## this

var car = {
  speed: 200,
  drive: function(){
    console.log("vroomm" + this.speed + "km/hr");
  },
  stop: function(){
      console.log("screeetch");
  }
}



var car = {
  speed: 200,
  drive: function(){
    console.log("vroomm");
  },
  stop: function(){
      if(this.speed === "fast"){
          console.log("Screeeeetch!!!");
      }else if(this.speed === "medium"){
          console.log("RRrch");
      }else if(this.speed === "slow"){
          console.log("sh");
      }else if(typeof(this.speed) === "number") {
          var e = []
          for(var i = 0; i < this.speed; i++){
              e.push("e")
          }
          e.join(" ")
          console.log("Scr" + e + "tch!!");
      }else {
              console.log("I dont know");
          }
  }
}

car.stop()


#higherorder

var MyFunction = function(anotherFunction) {
console.log(antherFunction(10)
}

var addFive = function(x){
return x + 5;
}
myFunction(addFive);


---------------------------------------------------------------------------
var call = function(num, anotherFunction){
    for(var i = 0; i < count; i++){
        num = anotherFunction(num);
    }
    return anotherFunction(num);
};

var doubleIt = function(x) {
    return 2 * x
}

console.log(call(5, doubleIt))
-------------------------------------------------------------------------

var map = function(array, anotherFunction){
    for(var i = 0; i < array.length; i++ ){
        array[i] = anotherFunction(array[i]);
    } return array;
};

var addOne = function(x){
    return x + 1;
};

console.log(map([1,2,3], addOne));


-----------------------------------------------------



## foreach

[1,2,3,4,5].forEach(function(x){
console.log(x);
});



var map = function(array, fn) {
}


-------------------------------------------------------

setTimeout(function(){
    console.log("Hello, World!")
}, 3000);
console.log("loading...")


var x =function(x) {
  console.log(".")
  setTimeout(function(x){
  },1000);
  
}
---------------------------------------------------------------------

var count = function(){
var odd = 1, even =2,
setInterval(function(){
  console.log("Odd: " + odd + " Even: " + even);
  odd += 2;
  even += 2;
}, 1000);
}();



var num = 0;

setInterval(function(){
if(num % 2 == 0) {
  console.log("counter 1: " + num);
}
num ++;
} ,1000)


-----------------------------------------------------------------------------------

1.
var ageCheck = function(age){
    if(age > 50){
        console.log("OLD");
    } else{
        console.log("YOUNG");
    }
};

ageCheck(80)

2.
var forEach = function(array,anotherFunction){
    for(var i = 0; i < array.length; i++){
        array[i] = anotherFunction(array[i]);
    }
    return array;
};


var sum = function(x){
    return x += 1
};


forEach([1,2,3,4],sum)

3.

var sayLater = function(string){
    setTimeout(function(){
        console.log(string)
    },5000);
};

sayLater("HI")

-------------------------------------------------------------------------------------------------------------

1. Personable

var tony = {
    name: "Tony",
    age: 27,
    compare: function(other){
        if(other.age > this.age){
            console.log("Hello, " + other.name +". I am "+ this.name + ". Please to meet you" )
        }else {
            console.log("Yo " + other.name + ". I'm totally " + this.name + ". Wsup!")
        }
    }
}

var mike = {
    name: "Mike",
    age: 25
}

tony.compare(mike)

2.

var isPositive = function(obj){
    if(typeof(obj) === "number" && obj >= 0){
        return false
    }else if(typeof(obj) === "number"){
        return true
    }else{
        return "!false"
    }
}


isPositive("yo")

3.
var filter = function(array, af) {
    newArray = []
    for(var i = 0; i < array.length; i++){
        newArray.push(af(array[i]))
    }return newArray
}

var isPositive = function(obj){
    if(typeof(obj) === "number" && obj >= 0){
        return false
    }else if(typeof(obj) === "number"){
        return true
    }else{
        return "!false"
    }
}

filter([1,2,-5,"toy"],isPositive)

4.

var count = 1;
var timer = 1000;
var counter = function(){
    console.log(count);
    interval;
    if(count === 10){
        clearInterval(interval);
    }
};

var interval =  setInterval(function(){
        console.log(++count);
    },timer += 1000);


counter();