url.protocol
获取和设置网址的协议部分。
const myURL = new URL('https://example.org');
console.log(myURL.protocol);
// 打印 https:
myURL.protocol = 'ftp';
console.log(myURL.href);
// 打印 ftp://example.org/
分配给 protocol
属性的无效的网址协议值将被忽略。
Gets and sets the protocol portion of the URL.
const myURL = new URL('https://example.org');
console.log(myURL.protocol);
// Prints https:
myURL.protocol = 'ftp';
console.log(myURL.href);
// Prints ftp://example.org/
Invalid URL protocol values assigned to the protocol
property are ignored.