当键是字符串时如何比较两个数组-JavaScript
假设以下是我们的第一个数组-
const firstArray = [
{ "name": "John Doe" },
{ "name": "John Smith" },
{ "name": "David Miller" },
{ "name": "Bob Taylor" },
{ "name": "Carol taylor" },
{ "name": "Adam Smith" },
];假设以下是我们的第二个数组-
const secondArray = [
{ "name": "Adam Smith" },
{ "name": "John Doe" },
{ "name": "David Miller" },
{ "name": "James Taylor" }
];要进行比较，请使用map()和includes()。
示例
以下是代码-
const firstArray = [
{ "name": "John Doe" },
{ "name": "John Smith" },
{ "name": "David Miller" },
{ "name": "Bob Taylor" },
{ "name": "Carol taylor" },
{ "name": "Adam Smith" },
];
const secondArray = [
{ "name": "Adam Smith" },
{ "name": "John Doe" },
{ "name": "David Miller" },
{ "name": "James Taylor" }
];
const getAllValue = ({ 'name': name }) => name;
const result = firstArray
.map(getAllValue)
.filter(value => secondArray
.map(getAllValue)
.includes(value)
);
console.log(result);要运行上述程序，您需要使用以下命令-
node fileName.js.
在这里，我的文件名为demo251.js
输出结果
这将在控制台上产生以下输出-
PS C:\Users\Amit\javascript-code> node demo251.js [ 'John Doe', 'David Miller', 'Adam Smith' ]