filter within filter js code example
Example 1: how the filter() function works javascript
const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
const filter = arr.filter((number) => number > 5);
console.log(filter);
Example 2: filter items javascript
function filterItems(e) {
var text = e.target.value.toLowerCase();
var items = itemList.getElementsByTagName('li');
Array.from(items).forEach(function(item) {
var itemName = item.firstChild.textContent;
if (itemName.toLowerCase().indexOf(text) != -1) {
item.style.display = 'block';
} else {
item.style.display = 'none';
}
});
}