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@@ -0,0 +1,180 @@
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+// html tree
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+// var body = {
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+// name: 'body',
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+// paired: true,
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+// children: [
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+// {
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+// name:'div',
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+// paired: true,
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+// children: [
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+// {
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+// name: 'span',
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+// paired: true,
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+// text: 'Enter a data please'
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+// },
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+// {
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+// name: 'br',
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+// paired: false
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+// },
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+// {
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+// name:'input',
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+// paired: false,
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+// type: 'text',
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+// id: 'name'
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+// },
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+// {
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+// name:'input',
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+// paired: false,
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+// type: 'text',
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+// id: 'surname',
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+// },
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+// ]
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+// },
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+// {
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+// name: 'div',
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+// paired: true,
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+// children: [
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+// {
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+// name: 'button',
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+// paired: true,
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+// text: 'OK',
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+// id: 'ok'
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+// },
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+// {
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+// name: 'button',
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+// paired: true,
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+// text: 'Cancel',
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+// id: 'cancel'
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+// }
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+// ]
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+// }
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+// ]
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+// }
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+
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+// declarative fields
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+var notebook = {
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+ brand: prompt('Enter brand notebook'),
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+ type: prompt('Enter type'),
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+ model: prompt('Enter model'),
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+ RAM: +prompt('quantity RAM'),
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+ SIZE: +prompt('Enter display size'),
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+ weight: +prompt('Enter weight'),
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+ resolution: {
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+ width: +prompt('resolution width'),
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+ height: +prompt('resolution height'),
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+ },
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+};
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+var phone = {
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+ brand: prompt('Enter brand phone'),
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+ model: prompt('Enter model'),
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+ ram: prompt('quantity RAM'),
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+ color: prompt('Enter color'),
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+};
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+
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+var person = {
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+ name: prompt("Enter a name"),
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+ surname: prompt("Enter a surname"),
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+ married: confirm('Are you married?'),
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+}
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+
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+
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+// array fill
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+var fill = [];
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+for (var i = prompt('Enter element'); i !== null; i = prompt('Enter element')) {
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+ fill.push(i);
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+}
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+console.log(fill);
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+
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+// array fill nopush - not worked
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+var fillNo = [];
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+for (var i = prompt('Enter element'); i !== null; i = prompt('Enter element')) {
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+ fillNo += fillNo[i];
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+}
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+console.log(fillNo);
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+
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+
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+// infinite probability
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+var i;
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+var t = 0;
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+while (i = Math.random() < 0.9) {
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+ t += 1;
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+if (i > 0.9) {
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+ break;
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+ }
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+}
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+alert(t);
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+
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+// empty loop
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+let empty = prompt('Нажми Ok, чтобы закончить');
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+while (empty === null) {
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+ empty = prompt('Нажми Ok, чтобы закончить');
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+}
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+
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+// progression sum
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+let sum = 1;
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+let n = prompt('Введите число для арифметической прогрессии');
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+for (var i = 0; i < n; i=i+3) {
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+sum += i;
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+}
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+alert(sum);
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+
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+// chess one line
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+let lenStr = 10;
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+for (var i=0; i < lenStr; i++) {
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+ if (i % 2 === 0){
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+ document.write(" ");
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+ }
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+else document.write("#");
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+}
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+
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+// numbers
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+for (var i = 0; i < 10; i++) {
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+ document.write("<br>");
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+ for (var j = 0; j < 10; j++) {
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+ document.write(j);
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+ }
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+}
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+
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+// chess
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+for (var i = 0; i < 8; i++) {
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+ document.write("<br>");
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+ if ( i % 2 === 0){
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+ for (var j = 0; j < 8; j++) {
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+ j % 2 === 0? document.write('.'): document.write('#');
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+ }
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+ }
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+ else {
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+ for (var j = 0; j < 8; j++) {
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+ j % 2 === 0? document.write('#'): document.write('.');
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+ }
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+ }
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+}
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+// cubes
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+document.write("<br>");
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+let cubes = [];
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+let n = 10;
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+for (i = 0; i < n; i++) {
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+ cubes[i] = Math.pow(i, 3);
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+}
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+document.write(cubes);
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+
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+// multiply table
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+// matrix to html table
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+var str ="<table border='1'>";
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+for (var i=0; i<10; i++){
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+ str += `<tr>`;
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+ for (var j=0; j<10; j++){
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+ str += `<td>${(i+1)*(j+1)}</td>`;
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+ }
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+ str +=`</tr>`;
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+}
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+str += `</table>`
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+a.innerHTML = str;
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+
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+// Задание на синий пояс: Треугольник
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+for (var i = 0; i < 6; i++) {
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+ document.write("<br>");
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+ for (var j = 1; j < 12; j++) {
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+ j < (6-i) || j > (6 + i)? document.write(" . "): document.write("*");
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+ }
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+}
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