Higher-order functions
How do I make an higher-order functions?
What is a higher-order functions? How do you make a higher-order functions? This script and codes were developed by Tim Ivey on 26 September 2022, Monday.
Higher-order functions - Script Codes HTML Codes
<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Higher-order functions</title>
</head>
<body> <h1>JavaScript: High-order functions</h1>
<p>View in console...</p> <script src="js/index.js"></script>
</body>
</html>
Higher-order functions - Script Codes JS Codes
/*** functions can create new functions */
function greaterThan(n) { return function(m) { return m > n; };
}
var greaterThan10 = greaterThan(10);
console.log(greaterThan10(11)); // true
/*** functions can change other functions */
function noisy(f) { return function(arg) { console.log("calling with", arg); var val = f(arg); console.log("called with", arg , "- got", val); return val;} ;}
noisy(Boolean)(0);
// calling with 0
// called with 0 - got false
/*** functions can provide new types of control flow */
function unless(test, then) { if (!test) then();
}
function repeat(times, body) { for (var i = 0; i < times; i++) body(i);
}
repeat(3, function(n) { unless(n % 2, function () { console.log(n, "is even"); });
});
// ! 0 is even
// ! 2 is even
Developer | Tim Ivey |
Username | timivey |
Uploaded | September 26, 2022 |
Rating | 3 |
Size | 1,687 Kb |
Views | 30,360 |
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