javascript对象数组增加一个新对象

有几种方法可以向JavaScript对象数组中添加新对象：

使用数组的push()方法将新对象添加到数组末尾：

var myArray = [{name: 'John', age: 25}, {name: 'Jane', age: 30}];
var newObject = {name: 'Bob', age: 20};
myArray.push(newObject);
console.log(myArray); // Output: [{name: 'John', age: 25}, {name: 'Jane', age: 30}, {name: 'Bob', age: 20}]

使用数组的unshift()方法将新对象添加到数组开头：

var myArray = [{name: 'John', age: 25}, {name: 'Jane', age: 30}];
var newObject = {name: 'Bob', age: 20};
myArray.unshift(newObject);
console.log(myArray); // Output: [{name: 'Bob', age: 20}, {name: 'John', age: 25}, {name: 'Jane', age: 30}]

在定义数组时将新对象添加到数组中：

var myArray = [{name: 'John', age: 25}, {name: 'Jane', age: 30}, {name: 'Bob', age: 20}];
console.log(myArray); // Output: [{name: 'John', age: 25}, {name: 'Jane', age: 30}, {name: 'Bob', age: 20}]

无论使用哪种方法，都需要创建一个新对象，并将其添加到数组中