79 lines
1.5 KiB
JavaScript
79 lines
1.5 KiB
JavaScript
let total = 0, count = 1;
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while (count < 10) {
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total += count;
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count += 1;
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}
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// for (let i = 0; i < 10; i++){
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// console.log(i)
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// }
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function repeatLog(n){
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for (let i = 0; i < n; i++){
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console.log(i)
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}
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}
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function repeat(n, action){
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for (let i = 0; i < n; i++){
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action(i);
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}
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}
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let labels = [];
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repeat(5, i => {
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labels.push(`Unit ${i + 1}`);
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})
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console.log(labels);
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function greaterThan(n){
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return m => m > n;
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}
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let greaterThan10 = greaterThan(10);
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console.log(greaterThan10(9));
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function noisy(f) {
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return (...args) => {
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console.log("calling with", args);
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let result = f(...args);
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console.log("called with", args, ", returned", result);
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return result;
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};
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}
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noisy(Math.max)(3, 2, 1);
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function unless(test, then){
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if(!test)then();
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}
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repeat(13, n => {
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unless(n % 2 == 1, () => {
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console.log(n, "is even");
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});
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});
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["A", "B"].forEach(l => console.log(l));
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// Hashrocket - Arrow functions
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const square = x => x * x;
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console.log(square(4))
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const sum = (a,b) => {
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return a + b
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}
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console.log(sum(2,4));
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function outerFunction(){
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var outerVariable = "Hello, ";
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function innerFunction(name){
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var innerVariable = "World!";
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var message = () => {
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console.log(outerVariable + name + " " + innerVariable);
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};
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return message()
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}
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innerFunction("John");
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}
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outerFunction();
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const numbers = [1,2,3,4,5];
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const filteredNumbers = numbers.filter(number => number % 2 === 0); |