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@@ -0,0 +1,59 @@
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+makeProfileTimer
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+function makeProfileTimer() {
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+ let start = performance.now();
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+ return function() {
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+ let end = performance.now();
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+ return `the code took ${end - start}ms`;
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+ };
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+}
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+
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+let timer = makeProfileTimer();
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+
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+alert("Замеряем время работы этого alert");
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+alert(timer());
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+
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+function makeSaver(data){
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+ let newData = data()
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+ return () => {
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+ return newData
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+ }
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+}
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+var saver = makeSaver(Math.random)
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+var value1 = saver()
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+var value2 = saver()
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+console.log(value1, value2)
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+console.log(value1 === value2 )
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+var saver2 = makeSaver(() => console.log('saved function called') || [null, undefined, false, '', 0, Math.random()][Math.ceil(Math.random()*6)])
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+var value3 = saver2()
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+var value4 = saver2()
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+console.log(value3 === value4)
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+
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+let namePrompt = prompt.bind(window, 'Как тебя зовут?')
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+let nameSaver = makeSaver(namePrompt)
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+
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+alert(`Привет! Prompt еще не было!`)
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+alert(`Привет ${nameSaver()}. Только что запустился prompt, первый и последний раз`)
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+alert(`Слушай, ${nameSaver()}, го пить пиво. Ведь prompt был только один раз`)
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+
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+let count = 5;
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+function timer() {
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+ console.log(count);
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+ const timeout = setTimeout(() => {
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+ timer();
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+ }, 1000);
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+ if (count > 0) {
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+ return (() => {
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+ return count--;
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+ })();
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+ }
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+ clearTimeout(timeout);
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+ if (count === 0) {
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+ console.log("поехали!");
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+ }
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+}
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+timer();
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+
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+
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+
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+
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+
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