Summary of double slash, single slash, no slash, Dot + single Slash in front of URL

Originally just an absolute URL and relative URL simple problem, but the actual use will encounter some uncommon, such as double slash, often do not even forget, do a summary. Please refer to this article

1.url Front is a double slash (//mljr.com/car.html) Double slash is a relative protocol for URL translation, if the current page is using the HTTPS protocol, then the converted URL is https://mljr.com/car.html

2.url Front is a single slash (/newcar.html) slash is relative to the server root directory for URL translation

3. No slash and Dot + slash are the same for these two current perceptions, which are URL conversions relative to the current directory.

Summary of double slash, single slash, no slash, Dot + single Slash in front of URL