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hof1.html
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hof1.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h2>HOF</h2>
<div>
<script>
// HOF
function filter(data, predicateFn) {
var elems = [];
for (var i = 0; i < data.length; i++) {
elems.push(data[i]);
}
return elems;
}
// HOF
function map(data, transformFn) {
var elems = [];
for (var i = 0; i < data.length; i++) {
elems.push(transformFn(data[i]));
}
return elems;
}
var products = [
{ "id": 1, "name": "iPhone", "price": 124447.44, "category": "mobile" },
{ "id": 2, "name": "Onida", "price": 4444.44, "category": "tv" },
{ "id": 3, "name": "OnePlus 6", "price": 98444.44, "category": "mobile" },
{ "id": 4, "name": "HDMI connector", "price": 2444.00, "category": "computer" },
{ "id": 5, "name": "Samsung", "price": 68000.00, "category": "tv" }];
var results = filter(products, function (elem) {
if (elem.category === 'tv') {
return true;
}
return false;
});
console.log(results);
results = map(products, function(elem) {
return "<div>" + elem.name + "</div>";
})
console.log(results);
</script>
</body>
</html>