为什么url查询组件没有被删除?

Question

我将href包装到URL，并尝试删除一个组件，与delete一起删除，但组件并未消失。你知道为什么吗?

let url = new URL(window.location.href);
let p = url.searchParams['postId'+$(".selected").length];
delete p;
window.location = url.toString();

---

我试过了:

const filteredItems = url.searchParams.filter(key => url.searchParams[key] == postID);
let key = filteredItems.keys.first;
url.searchParams.delete(key);

但是上面写着

Uncaught TypeError: url.searchParams.filter is not a function

---

我现在试过这个表达，但filter不工作，你知道为什么吗?

function togglePost(postID) {
let url = new URL(window.location.href);
const filteredItems = Object.keys(url.searchParams).filter(key =>
url.searchParams[key] == postID
);
let key = filteredItems.keys.first;

Answer 1

delete操作符从对象中删除属性。

您正在尝试删除一个变量。

要从URLSearchParams对象中删除某些内容，请使用delete方法:

let url = new URL('http://example.com/foo.cgi?a=1&b=2');
console.log(url.toString());
url.searchParams.delete('a');
console.log(url.toString());