TS中经常用于开发的数组方法

<code class="typescript">const numbers = [1, 2, 3, 4, 5];
const evens = numbers.filter(num => num % 2 === 0);
console.log(evens); // [2, 4]</code>

<code class="typescript">const numbers = [1, 2, 3, 4];
const sum = numbers.reduce((acc, curr) => acc + curr, 0);
console.log(sum); // 10</code>

<code class="typescript">const fruits = ['apple', 'banana', 'orange'];
fruits.forEach(fruit => console.log(fruit));
// 输出：
// apple
// banana
// orange</code>

<code class="typescript">const users = [{id: 1, name: 'alice'}, {id: 2, name: 'bob'}];
const user = users.find(user => user.id === 2);
console.log(user?.name); // "bob"</code>

<code class="typescript">const users = [{active: true}, {active: false}, {active: true}];
const hasActiveUser = users.some(user => user.active);
console.log(hasActiveUser); // true</code>

<code class="typescript">const ages = [21, 25, 28];
const allAdults = ages.every(age => age >= 18);
console.log(allAdults); // true</code>

<code class="typescript">const array1 = ['a', 'b', 'c'];
const array2 = ['d', 'e', 'f'];
const combined = array1.concat(array2);
console.log(combined); // ['a', 'b', 'c', 'd', 'e', 'f']</code>

<code class="typescript">const animals = ['ant', 'bison', 'camel', 'duck', 'elephant'];
console.log(animals.slice(2, 4)); // ['camel', 'duck']</code>

<code class="typescript">const pets = ['cat', 'dog', 'fish'];
console.log(pets.includes('dog')); // true
console.log(pets.includes('bird')); // false</code>

<code class="typescript">const names = ['Bob', 'Alice', 'Charlie'];
names.sort();
console.log(names); // ['Alice', 'Bob', 'Charlie']</code>