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@@ -16,11 +16,67 @@
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// console.log(persons.sort());
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-
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// array map
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// var arrMay = ["1", {}, null, undefined, "500", 700]
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+
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// var result = arrMay.map(function(item){
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// var number = parseInt(item);
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-// return isNaN(number) ? item : number;
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+// return isNaN(number) ? item : number
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+// })
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+// console.log(result)
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+
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+// array reduce
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+// var arr = ["0", 5, 3, "string", null];
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+
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+// var result = arr.reduce(function(item, mul){
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+// return typeof(mul) === 'number' ? item *= mul : item
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+// }, 1)
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+// console.log(result);
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+
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+// object filter
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+// var phone = {
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+// brand: "meizu",
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+// model: "m2",
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+// ram: 2,
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+// color: "black",
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+// };
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+
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+// function filter(obj, key, value) {
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+// var itog = {};
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+// for (let item in obj) {
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+// if (key === item || obj[item] === value) itog[item] = obj[item];
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+// }
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+// return itog;
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+// }
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+// console.log(filter(phone, "color", 2))
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+
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+
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+
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+// object map
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+// map({ name: "Иван", age: 17 }, function (key, value) {
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+// var result = {};
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+// result[key + "_"] = value + "$";
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+// return result;
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+// });
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+//должен вернуть {name_: "Иван$", age_: "17$"}
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+
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+
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+
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+// var person = [
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+// {name: "Иван"},
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+// {age: 17}
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+// ]
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+
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+// var newPerson = person.map(function(obj){
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+// var result = {}
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+
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+// for (var key in obj){
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+// var personName = key + "_"
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+// var personAge = obj[key] + "$"
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+// }
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+
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+// result[personName] = personAge
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+// return result
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// })
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-// console.log(result)
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+
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+// console.log(newPerson)
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