在声明时有条件地将对象添加到数组中

let array = [];
let condition = true; // 假设这是你的条件
let obj = { key: 'value' };

condition ? array.push(obj) : null;

let array = [];
let condition = true; // 假设这是你的条件
let obj = { key: 'value' };

if (condition) {
    array.push(obj);
}

let array = [{ key: 'value1' }, { key: 'value2' }];
let condition = (item) => item.key === 'value1';

array = array.filter(condition);

let items = [
    { id: 1, name: 'Item 1', isActive: true },
    { id: 2, name: 'Item 2', isActive: false },
    { id: 3, name: 'Item 3', isActive: true }
];

let activeItems = [];

for (let item of items) {
    if (item.isActive) {
        activeItems.push(item);
    }
}

console.log(activeItems); // 输出只有isActive为true的对象