url.hostname

• <string>

获取和设置网址的主机名部分。 url.host 和 url.hostname 之间的主要区别在于 url.hostname 不包括端口。

const myURL = new URL('https://example.org:81/foo');
console.log(myURL.hostname);
// 打印 example.org

// 设置主机名不会改变端口
myURL.hostname = 'example.com:82';
console.log(myURL.href);
// 打印 https://example.com:81/foo

// 使用 myURL.host 更改主机名和端口
myURL.host = 'example.org:82';
console.log(myURL.href);
// 打印 https://example.org:82/foo

分配给 hostname 属性的无效主机名值将被忽略。

• <string>

Gets and sets the host name portion of the URL. The key difference between url.host and url.hostname is that url.hostname does not include the port.

const myURL = new URL('https://example.org:81/foo');
console.log(myURL.hostname);
// Prints example.org

// Setting the hostname does not change the port
myURL.hostname = 'example.com:82';
console.log(myURL.href);
// Prints https://example.com:81/foo

// Use myURL.host to change the hostname and port
myURL.host = 'example.org:82';
console.log(myURL.href);
// Prints https://example.org:82/foo

Invalid host name values assigned to the hostname property are ignored.