property URL.prototype.username
Usage in Deno
```typescript import { URL } from "node:node__url.d.ts"; ```Gets and sets the username portion of the URL.
```js
const myURL = new URL('https://abc:xyz@example.com');
console.log(myURL.username);
// Prints abc
myURL.username = '123';
console.log(myURL.href);
// Prints https://123:xyz@example.com/
```
Any invalid URL characters appearing in the value assigned the `username` property will be `percent-encoded`. The selection of which
characters to percent-encode may vary somewhat from what the [parse](../.././node__url.d.ts/~/parse) and [format](../.././node__url.d.ts/~/format) methods would produce.
string