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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+</head>
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+<body>
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+ <script>
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+//A
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+ function a(text){
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+ return alert(text)
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+ }
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+ function aSample(){
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+ a("Привет!") // вызывает alert("Привет!")
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+ }
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+
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+
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+//CUBE
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+ function cube(num){
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+
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+ return num*num*num
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+ }
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+
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+ function cubeSample(){
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+ console.log("input: 5; output: "+cube(5)) // => 125
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+ }
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+
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+//AVG2
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+
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+ function avg2(a,b){
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+
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+ return (a + b) / 2
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+ }
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+
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+ function avg2Sample(){
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+ console.log("input: 1,2; output: "+avg2(1,2)) // возвращает 1.5
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+ console.log("input: 10,5; output: "+avg2(10,5)) // возвращает 7.5
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+ }
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+
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+//SUM3
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+
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+ function sum3(num1 =0,num2=0,num3=0){
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+
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+ return num1+num2+num3
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+ }
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+
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+ function sum3Sample(){
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+ console.log("input: 1,2,3; output: "+sum3(1,2,3)) // => 6
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+ console.log("input: 5,10,100500; output: "+sum3(5,10,100500)) // => 100515
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+ console.log("input: 5,10; output: "+sum3(5,10)) // => 15
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+
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+ }
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+
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+
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+//INTRANDOM
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+ function intRandom(a,b){
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+
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+ if(!b){
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+ b=a
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+ a=0
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+ }
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+ return(Math.round(Math.random()*(b-a)+a))
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+ }
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+
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+ function intRandomSample(){
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+ console.log("input: 2,15; output: "+ intRandom(2,15)) // возвращает целое случайное число от 2 до 15 (включительно)
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+ console.log("input: -1,-1; output: "+intRandom(-1,-1)) // вернет -1
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+ console.log("input: 0,1; output: "+intRandom(0,1)) // вернет 0 или 1
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+ console.log("input: 10; output: "+intRandom(10)) // вернет 0 до 10 включительно
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+ }
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+
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+//GREETALL
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+
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+
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+ function greetAll(...params){
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+
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+ let str = "Hello"
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+ for(let el of params){
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+ str += params.indexOf(el) ===0 ? ` ${el}` : `, ${el}`
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+ }
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+ alert(str)
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+ }
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+
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+ function greetAllSample(){
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+ console.log("input: Superman; output: "+greetAll("Superman"))
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+ console.log("input: Superman, SpiderMan; output: "+greetAll("Superman", "SpiderMan"))
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+ console.log("input: Superman, SpiderMan, Captain Obvious; output: "+greetAll("Superman", "SpiderMan", "Captain Obvious"))
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+ }
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+
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+//SUM
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+
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+ function sum(...params){
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+
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+ let sum = 0
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+ for(let num of params){
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+ sum+= +num
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+ }
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+ return sum
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+ }
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+ function sumSample(){
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+ console.log("input: 1; output: "+sum(1))
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+ console.log("input: 2; output: "+sum(2))
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+ console.log("input: 10,20,40,100; output: "+sum(10,20,40,100))
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+ }
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+
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+
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+//UNION
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+ for(;;){
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+ let task = prompt("Введите название задания")?.toUpperCase()
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+ if(!task){
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+ break;
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+ }
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+ switch (task){
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+ case "A": aSample()
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+ break
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+ case "CUBE": cubeSample()
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+ break
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+ case "AVG2": avg2Sample()
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+ break
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+ case "SUM3": sum3Sample()
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+ break
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+ case "INTRANDOM": intRandomSample()
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+ break
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+ case "GREETALL": greetAllSample()
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+ break
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+ case "SUM": sumSample()
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+ break
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+ }
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+ }
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+
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+
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+//UNION DECLARATIVE
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+ // let tasks = {
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+ // "A": aSample,
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+ // "CUBE": cubeSample,
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+ // "AVG2": avg2Sample,
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+ // "SUM3": sum3Sample,
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+ // "INTRANDOM": intRandomSample,
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+ // "GREETALL": greetAllSample,
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+ // "SUM": sumSample
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+ // }
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+
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+ // for(;;){
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+ // let task = prompt("Введите название задания")?.toUpperCase()
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+ // if(!task){
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+ // break;
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+ // }
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+ // tasks[task]()
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+
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+ // }
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+
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+ </script>
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+</body>
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+</html>
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ilya_shyian