从数组中删除/过滤重复记录-JavaScript？
假设以下是我们的记录，其中包含一些重复的值-
var objectOfNationality =
[
{ nationality: "Indian" },
{ nationality: "American" },
{ nationality: "Emirati" },
{ nationality: "Indian" },
{ nationality: "American" }
];示例
要删除重复的记录，请使用概念。Set()以下是代码-
var objectOfNationality =
[
{ nationality: "Indian" },
{ nationality: "American" },
{ nationality: "Emirati" },
{ nationality: "Indian" },
{ nationality: "American" }
];
function removeOrFilterNationality(objectOfNationality) {
return Array.from(new Set(objectOfNationality.map(tempObject => tempObject.nationality)));
}
console.log(removeOrFilterNationality(objectOfNationality));要运行以上程序，您需要使用以下命令-
node fileName.js.
在这里，我的文件名为demo228.js。
输出结果
输出如下-
PS C:\Users\Amit\JavaScript-code> node demo228.js [ 'Indian', 'American', 'Emirati' ]