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@@ -0,0 +1,233 @@
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+"use strict";
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+
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+
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+//TODO: 3 persons
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+let a = {
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+ name: "Ivan",
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+ surname: "Petrov",
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+}
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+
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+let b = {
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+ name: "Kate",
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+ surname: "Smirnova",
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+}
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+
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+let c = {
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+ name: "Lisa",
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+ surname: "Volkova",
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+}
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+
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+
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+//TODO: different fields
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+a.age = 16;
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+a.sex = "male";
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+b.fathername = "Aleksandrovna";
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+c.age = 24;
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+c.sex = "female";
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+
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+
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+function fieldsCheck() {
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+ for (let key in a) {
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+ if (key == "name" || key == "surname") {
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+ continue
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+ }
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+ console.log(a[key]);
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+ }
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+
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+ for (let key in b) {
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+ if (key == "name" || key == "surname") {
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+ continue
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+ }
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+ console.log(b[key]);
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+ }
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+
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+ for (let key in c) {
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+ if (key == "name" || key == "surname") {
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+ continue
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+ }
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+ console.log(c[key]);
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+ }
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+}
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+// fieldsCheck()
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+
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+
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+let persons = [a, b, c, {
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+ name: "Sara",
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+ surname: "Romanova",
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+ fathername: "Tihomirovna"
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+}];
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+
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+
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+function loopOfPersons() {
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+ for (let i = 0; i < persons.length; i++) {
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+ console.log(persons[i])
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+ };
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+}
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+// loopOfPersons()
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+
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+
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+function loopOfNameSurname() {
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+ for (let key of persons) {
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+ console.log(`Name: ${key.name}, Surname: ${key.surname}`)
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+ }
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+}
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+// loopOfNameSurname()
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+
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+
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+function loopOfValues() {
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+ for (let i in persons) {
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+ for (let key in persons[i]) {
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+ console.log(persons[i][key])
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+ }
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+ }
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+}
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+// loopOfValues()
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+
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+
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+function fullName() {
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+ for (let obj of persons) {
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+ obj.fullName = `${obj.surname} ${obj.name}`;
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+ if (obj.fathername) {
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+ obj.fullName += ` ${obj.fathername}`;
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+ }
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+ console.log(obj);
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+ }
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+}
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+// fullName()
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+
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+
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+function serialize() {
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+ let objJson = JSON.stringify(persons);
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+}
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+// serialize()
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+
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+
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+function deserialize() {
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+ let obj = JSON.parse(`{"name":"Lara","surname":"Koval","age":12,"sex":"female"}`);
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+ persons.push(obj);
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+ console.log(persons);
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+}
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+// deserialize()
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+
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+
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+function html() {
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+ let str = "<table border='1'>"
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+ for (let i = 0; i < persons.length; i++) {
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+ str +=
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+ `<tr>
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+ <td>${persons[i]["name"]}</td>
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+ <td>${persons[i]["surname"]}</td>
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+ </tr>`
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+ console.log(persons[i])
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+ }
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+ str += "</table>"
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+
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+ console.log(str);
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+ document.write(str);
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+}
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+// html()
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+
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+
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+function htmlOptionalFields() {
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+ let str = "<table border='1'>"
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+ for (let i = 0; i < persons.length; i++) {
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+ if ((i % 2) == 0) {
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+ str += "<tr bgcolor='grey'>"
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+ }
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+ for (let key in persons[i]) {
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+ str += `<td>${persons[i][key]}</td>`
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+ }
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+ str += "</tr>"
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+ console.log(persons[i]);
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+ }
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+ str += "</table>"
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+
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+ console.log(str);
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+ document.write(str);
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+}
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+// htmlOptionalFields()
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+
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+
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+function blueBelt() {
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+ let someTree = {
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+ tagName: "table",
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+ subTags: [{
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+ tagName: "tr",
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+ subTags: [{
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+ tagName: "td",
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+ text: "some text",
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+ },
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+ {
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+ tagName: "td",
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+ text: "some text",
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+ }
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+ ]
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+ }],
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+ attrs: {
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+ border: 1,
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+ },
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+ }
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+
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+ let str = "<table border=1>"
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+ for (let i = 0; i < 1; i++) {
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+ str +=
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+ `<tr>
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+ <td>${"some text"}</td>
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+ <td>${"some text"}</td>
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+ </tr>`
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+ }
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+ str += "</table>"
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+ document.write(str)
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+}
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+// blueBelt()
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+
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+
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+function destructArray() {
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+ let arr = [1, 2, 3, 4, 5, "a", "b", "c"];
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+ let [odd1, even1, odd2, even2, odd3, ...rest] = arr;
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+ console.log(rest);
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+}
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+// destructArray()
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+
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+
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+function destructString() {
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+ let arr = [1, "abc"];
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+ let [number, [s1, s2, s3]] = arr;
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+
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+ console.log(number);
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+ console.log(s1);
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+ console.log(s2);
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+ console.log(s3);
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+}
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+// destructString()
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+
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+
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+function destruct2() {
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+ let obj = {
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+ name: 'Ivan',
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+ surname: 'Petrov',
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+ children: [{
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+ name: 'Maria'
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+ },
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+ {
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+ name: 'Nikolay'
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+ }
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+ ]
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+ }
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+
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+ let [name1, name2] = [obj.children[0].name, obj.children[1].name];
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+ console.log(name1);
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+ console.log(name2);
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+}
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+// destruct2()
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+
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+
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+function destruct3() {
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+ let arr = [1, 2, 3, 4, 5, 6, 7, 10];
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+ let [[a, b], length] = [arr, arr.length];
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+
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+ console.log(a);
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+ console.log(b);
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+ console.log(length);
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+}
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+// destruct3()
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