Oop stage2

bike-shop/src/stage1-literals.js

@@ -1,5 +1,24 @@
 const myBike = {
-  // your code here
+  name: "Roadster",
+  price: 199.99,
+  frame: new frame() {
+    height: 55,
+    color: 'blue',
+    stlye: 'cruiser'
+  }
+  brakes: new brakes() {
+    front: false,
+    back: true
+  }
+  tires: new tires() {
+    diameter: 22,
+    type: 'fat'
+  }
+  rings: new rings() {
+    front: 2,
+    back: 5
+  }
 }
 
+
 module.exports = myBike

bike-shop/src/stage2-constructors.js

@@ -1,15 +1,30 @@
-function Bike() {
-  // your code here
-}
 
-function Frame() {
-  // your code here
+function Frame(color, size, style) {
+  this.color = 'black';
+  this.size = 55;
+  this.style = 'street';
 }
 
+let myFrame = new Frame();
+
+function myFrame() {
+  this.color = 'blue',
+  this.size = 60,
+  this.style = 'mountain'
+};
+
+// myFrame.color = 'blue';
+// myFrame.size = 60;
+// myFrame.style = 'mountain';
+
 function Tire() {
-  // your code here
 }
 
+function Bike() {
+
+}
+
+
 module.exports = {
   Bike: Bike,
   Frame: Frame,

jsinfo/Create_calculator.js

@@ -0,0 +1,20 @@
+//Create Calculator
+
+let calculator = {
+
+  read() {
+    this.num1 = +prompt('num1?');
+    this.num2 = +prompt('num2?');
+  },
+  sum() {
+    return this.num1 + this.num2;
+  },
+
+  mul() {
+    return this.num1 * this.num2;
+  },
+};
+
+calculator.read();
+alert( calculator.sum() );
+alert( calculator.mul() );

jsinfo/Extendable_Calculator.js

@@ -0,0 +1,27 @@
+// Extendable Calculator
+
+function Calculator() {
+
+  let methods = {
+    "-": (a, b) => a - b,
+    "+": (a, b) => a + b
+  };
+
+  this.calculate = function(str) {
+
+    let split = str.split(' '),
+      a = +split[0],
+      op = split[1],
+      b = +split[2]
+
+    if (!methods[op] || isNaN(a) || isNaN(b)) {
+      return NaN;
+    }
+
+    return methods[op](a, b);
+  }
+
+  this.addMethod = function(name, func) {
+    methods[name] = func;
+  };  
+}

jsinfo/Hello_Object.js

@@ -0,0 +1,8 @@
+//Hello Object
+
+let user = {}
+user.name: 'John';
+user.surname: 'Smith';
+user.name = 'Pete';
+
+delete user.name

jsinfo/Ladder.js

@@ -0,0 +1,17 @@
+//Ladder
+
+let ladder = {
+  step: 0,
+  up() {
+    this.step++;
+    return this;
+  },
+  down() {
+    this.step--;
+    return this;
+  },
+  showStep: function() { // shows the current step
+    alert( this.step );
+    return this;
+  }
+};

jsinfo/Multipy_numeric_properties.js

@@ -0,0 +1,26 @@
+//Multipy Numeric Properties by 2
+
+// before the call
+let menu = {
+  width: 200,
+  height: 300,
+  title: "My menu"
+};
+
+multiplyNumeric(menu);
+
+ function multiplyNumeric() {
+   for ( let key in obj ) {
+     if (typeof obj[key] == 'number') {
+       obj[key] *= 2;
+     }
+   }
+ }
+
+
+// after the call
+menu = {
+  width: 400,
+  height: 600,
+  title: "My menu"
+};

jsinfo/New_Accumulator.js

@@ -0,0 +1,16 @@
+//New Accumulator
+
+function Accumulator(startingValue) {
+  this.value = startingValue;
+
+  this.read = function() {
+    this.value += +prompt('How much to add?', 0);
+  };
+}
+
+
+let accumulator = new Accumulator(1);
+accumulator.read();
+accumulator.read();
+
+alert(accumulator.value)

jsinfo/New_Calculator.js

@@ -0,0 +1,23 @@
+//New Calculator
+
+function Calculator() {
+
+  this.read = function() {
+    this.a = +prompt('a?', 0);
+    this.b = +prompt('b?', 0);
+  };
+
+  this.sum = function() {
+    return this.a + this.b;
+  };
+
+  this.mul = function() {
+    return this.a * this.b;
+  };
+}
+
+let calculator = new Calculator();
+calculator.read();
+
+alert( "Sum=" + calculator.sum() );
+alert( "Mul=" + calculator.mul() );