|
|
@@ -0,0 +1,117 @@
|
|
|
+<!DOCTYPE html>
|
|
|
+<html lang="en">
|
|
|
+<head>
|
|
|
+ <meta charset="UTF-8">
|
|
|
+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
|
|
|
+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
|
+ <title>Document</title>
|
|
|
+</head>
|
|
|
+<body>
|
|
|
+ <script>
|
|
|
+//ES6 done hw7
|
|
|
+
|
|
|
+//sort
|
|
|
+ var persons = [
|
|
|
+ {name: "Иван", age: 17},
|
|
|
+ {name: "Мария", age: 35},
|
|
|
+ {name: "Алексей", age: 73},
|
|
|
+ {name: "Яков", age: 12},
|
|
|
+ ]
|
|
|
+
|
|
|
+ function sort(array, keys, boolean){
|
|
|
+ array.sort(sorting)
|
|
|
+ function sorting(a, b){
|
|
|
+ return (boolean) ? (a[keys] < b[keys]) : (b[keys] < a[keys]);
|
|
|
+ }
|
|
|
+ return array;
|
|
|
+ }
|
|
|
+
|
|
|
+ console.log(sort(persons, "age"));
|
|
|
+ // console.log(sort(persons, "name", false));
|
|
|
+ // console.log(sort(persons, "age",true));
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+//array map
|
|
|
+ var array = ["1", {}, null, undefined, "500", 700]
|
|
|
+ var result = array.map(function(item) {
|
|
|
+ var number = parseInt(item);
|
|
|
+ return isNaN(number)? item : number;
|
|
|
+ });
|
|
|
+
|
|
|
+ console.log(result);
|
|
|
+//array reduce
|
|
|
+ var arr = ["0", 5, 3, "string", null]
|
|
|
+ function reducing(total, i){
|
|
|
+ if (!isNaN(i) && i != 0 && isFinite(i) && i != null){
|
|
|
+ return total*=i
|
|
|
+ }
|
|
|
+ return total;
|
|
|
+ };
|
|
|
+ var result2 = arr.reduce(reducing, 1)
|
|
|
+
|
|
|
+ console.log( result2 )
|
|
|
+
|
|
|
+//object filter
|
|
|
+ var phone = {
|
|
|
+ brand: "meizu",
|
|
|
+ model: "m2",
|
|
|
+ ram: 2,
|
|
|
+ color: "black",
|
|
|
+ };
|
|
|
+
|
|
|
+ console.log(filter(phone,(key,value) => key == "color" || value == 2));
|
|
|
+
|
|
|
+
|
|
|
+ function filter(object ,key , value){
|
|
|
+ var result = {};
|
|
|
+ for(var key in object){
|
|
|
+ for(var value in object){
|
|
|
+ if(object[key] == 2) result[key] = object[key];
|
|
|
+ if(value == "color") result[value] = object[value];
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+//object map
|
|
|
+ map({name: "Иван", age: 17},function(key,value){
|
|
|
+ var result = {};
|
|
|
+ result[key+"_"] = value + "$";
|
|
|
+ return result;
|
|
|
+ })
|
|
|
+ //должен вернуть {name_: "Иван$", age_:"17$"}
|
|
|
+ function map(object, funct){
|
|
|
+ for(key in object){
|
|
|
+ funct(object, key, object[key]);
|
|
|
+ delete object[key];
|
|
|
+ }
|
|
|
+ return object;
|
|
|
+ }
|
|
|
+
|
|
|
+ function check(object, key, value){
|
|
|
+ object[key + "_"] = value + "$";
|
|
|
+ return object;
|
|
|
+ }
|
|
|
+
|
|
|
+ console.log(map({name: "Иван", age: 17}, check))
|
|
|
+
|
|
|
+
|
|
|
+//Рекурсия +++++++++++
|
|
|
+ function recurse(min , step , max){
|
|
|
+ if (max <= 0) return 0;
|
|
|
+ return min + recurse(min + step, step ,max -1)
|
|
|
+ }
|
|
|
+
|
|
|
+ console.log(recurse(5,10,15) + " = Сумма арифметической прогрессии Sn")
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ </script>
|
|
|
+
|
|
|
+</body>
|
|
|
+</html>
|
Vadym Shakhmatenko