一个对象数组，我们根据其每个对象的某个属性如id，实现去重，去重方法需要传入两个参数：去重的对象数组，去重依据的字段
代码实现：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>数组对象去重</title>
</head>
<body>
<script>
const responseList = [
{id: 1, name: "张三", sex: "男"},
{id: 2, name: "李四" },
{id: 3, name: "王五" },
{id: 4, name: "张三", sex: "女"},
{id: 2, name: "李四"},
]
console.log("去重前的数组：",responseList);
// 接收参数：去重的对象数组，去重依据的字段
const uniqueArrayObject = (arr = [], key = 'id') => {
if(arr.length === 0) return; // 空数组
let list = []; // 接收去重后的数组
const map = {};
arr.forEach (item => {
if(!map[item[key]]) {
map[item[key]] = item; // {1: {id: 1, name: "张三", sex: "男"},{2,{id: 2, name: "李四" }},
}
});
list = Object.values(map);
console.log("去重后的数组：",list);
return list;
}
uniqueArrayObject(responseList, 'id');
</script>
</body>
</html>
