done state

.gitignore

@@ -0,0 +1,5 @@
+/.idea
+*.iml
+*.log
+
+node_modules

data/db.json

@@ -0,0 +1,23 @@
+{
+  "persons": [
+    {
+      "id": 2948,
+      "code": "A03259",
+      "name": "Jill",
+      "age": 20
+    }
+  ],
+  "health-insurance": [
+    {
+      "id": "A03259",
+      "isInsured": true,
+      "insuredTill": "01/31/2017"
+    }
+  ],
+  "tax-debt": [
+    {
+      "id": "A03259",
+      "debt": 100
+    }
+  ]
+}

data/routes.json

@@ -0,0 +1,3 @@
+{
+  "/api/": "/"
+}

ex1.js

@@ -0,0 +1,19 @@
+'use strict';
+
+var array = [1, 2, 3, 4, 5, 6];
+
+array = filter(array, function (each) {
+    return each % 2 === 0;
+});
+
+console.log('Even numbers: ' + array);
+
+function filter(array, predicate) {
+    var result = [];
+    for (var i = 0; i < array.length; i++) {
+        if (predicate(array[i])) {
+            result.push(array[i]);
+        }
+    }
+    return result;
+}

ex2.js

@@ -0,0 +1,12 @@
+'use strict';
+
+var array = [1, 2, 3, 4, 5, 6];
+
+array = array.filter(function (each) {
+   return each % 2 === 0;
+}).map(function (each) {
+    return each * each;
+});
+
+console.log('Even numbers squared: ' + array);
+

ex3.js

@@ -0,0 +1,19 @@
+'use strict';
+
+var array = [
+    { id: 1, selected: false },
+    { id: 2, selected: true },
+    { id: 3, selected: false },
+    { id: 4, selected: true },
+    { id: 5, selected: true },
+    { id: 6, selected: false }
+];
+
+array = array.filter(function (each) {
+   return each.selected;
+}).map(function (each) {
+    return each.id;
+});
+
+console.log('Ids of selected objects: ' + array);
+

ex4.js

@@ -0,0 +1,20 @@
+'use strict';
+
+function Person(name) {
+    this.name = name;
+}
+
+Person.prototype.getName = function () {
+    return this.name;
+};
+
+Person.prototype.setName = function (name) {
+    return this.name = name;
+};
+
+var person = new Person('Jack');
+var person2 = new Person('Jack');
+
+console.log(person.getName());
+console.log(Object.keys(person));
+console.log(Object.keys(person.__proto__));

ex5.js

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+'use strict';
+
+
+factorial(5, function (res) {
+    console.log('res: ' + res);
+});
+
+
+
+function factorial(n, callback) {
+    if (n < 0) {
+        throw 'illegal argument'
+    }
+
+    var result = 1;
+    while (n > 0) {
+        result *= n;
+        n--;
+    }
+
+    callback(result);
+}

ex6.js

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+'use strict';
+
+var request = require("request");
+
+get('/api/persons/2948', function(data) {
+    var code = data.code;
+    var name = data.name;
+
+    get('/api/health-insurance/' + code, function(data) {
+        var isInsured = data.isInsured;
+
+        get('/api/tax-debt/' + code, function(data) {
+
+            var debt = data.debt;
+
+            var person = {
+                name : name,
+                isInsured: isInsured,
+                taxDebt: debt
+            };
+
+            console.log(person);
+        });
+    });
+
+});
+
+
+// helper function
+function get(url, cb) {
+    request('http://localhost:3000' + url, function(error, response, body) {
+        cb(JSON.parse(body));
+    });
+}

package.json

@@ -0,0 +1,11 @@
+{
+  "name": "i399exlang",
+  "version": "1.0.0",
+  "devDependencies": {
+    "json-server": "0.9.5",
+    "request": "^2.81.0"
+  },
+  "scripts": {
+    "start": "json-server data/db.json --static ./ --routes data/routes.json"
+  }
+}