code-boxx/0-JS-URL-PARTS.MD

## 0-JS-URL-PARTS.MD

      
    Raw
  

              0-JS-URL-PARTS.MD
            
          
    JAVASCRIPT GET FULL URL & URL PARTS

https://code-boxx.com/url-parts-javascript/
IMAGES


LICENSE

Copyright by Code Boxx
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

  
## 1-location.html
<!DOCTYPE html>
<html>
  <head>
    <title>Window Location</title>
    <script>
    // FULL URL - HTTP://SITE.COM/PATH/FILE.HTML?KEY=VALUE
    console.log(location.href);

    // PROTOCOL - HTTP:
    console.log(location.protocol);

    // HOST NAME - SITE.COM
    console.log(location.hostname);

    // HOST NAME + PORT - SITE.COM:8080
    console.log(location.host);

    // PROTOCOL + HOSTNAME + PORT - HTTP://SITE.COM:8080
    console.log(location.origin);

    // PORT - 8080
    console.log(location.port);

    // PATH + FILE - PATH/FILE.HTML
    console.log(location.pathname);

    // SEARCH QUERY - ?KEY=VALUE
    console.log(location.search);

    // HASH - #BOOKMARK
    console.log(location.hash);
    </script>
  </head>
  <body></body>
</html>

## 2-derived.html
<!DOCTYPE html>
<html>
  <head>
    <title>Derived URL Parts</title>
    <script>
    // (A) FILE NAME ONLY
    var fileonly = location.pathname;
    // fileonly = fileonly.substring(fileonly.lastIndexOf("/")+1);
    fileonly = fileonly.replace(/^.*[\\\/]/, "");
    console.log(fileonly);

    // (B) PATH ONLY
    var pathonly = location.pathname;
    pathonly = pathonly.substr(0, pathonly.lastIndexOf("/"));
    console.log(pathonly);

    // (C) BASE URL
    var baseurl = `${location.protocol}//${location.host}${pathonly}/`;
    console.log(baseurl);
    </script>
  </head>
  <body></body>
</html>

## 3-query-string.html
<!DOCTYPE html>
<html>
  <head>
    <title>Query String</title>
    <script>
    // (A) NEW SEARCH PARAMS OBJECT
    // ASSUMING THAT WE START WITH ?KEY=VAL&FOO=BAR
    var params = new URLSearchParams(location.search);

    // (B) HAS KEY & GET VALUE
    console.log(params.has("key")); // true
    console.log(params.get("key")); // val

    // (C) LOOP THROUGH ALL KEYS
    for (let k of params.keys()) {
      console.log(k); // key, foo
    }

    // (D) APPEND, SET, DELETE
    params.append("hello", "world"); // query string is now key=val&foo=bar&hello=world
    params.set("hello", "kitty");    // query string is now key=val&foo=bar&hello=kitty
    params.delete("key");            // query string is now foo=bar&hello=kitty

    // (E) TO STRING
    var str = params.toString();
    console.log(str); // foo=bar&hello=kitty
    </script>
  </head>
  <body></body>
</html>

## 4-parse.html
<!DOCTYPE html>
<html>
  <head>
    <title>Parse URL From Elements</title>
  </head>
  <body>
    <!-- (A) HTML ELEMENTS -->
    <a id="demoA" href="https://code-boxx.com/path/file.html?key=val">Code Boxx</a>
    <img id="demoB" src="baguette.png">

    <script>
    // (B) PARSE <A HREF>
    let url = new URL(document.getElementById("demoA").href);
    console.log(url.hostname); // code-boxx.com
    console.log(url.pathname); // /path/file.html

    // (C) PARSE <IMG SRC>
    url = new URL(document.getElementById("demoB").src);
    console.log(url.pathname); // /path/corgi.png
    </script>
  </body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Window Location</title>
	<script>
	// FULL URL - HTTP://SITE.COM/PATH/FILE.HTML?KEY=VALUE
	console.log(location.href);

	// PROTOCOL - HTTP:
	console.log(location.protocol);

	// HOST NAME - SITE.COM
	console.log(location.hostname);

	// HOST NAME + PORT - SITE.COM:8080
	console.log(location.host);

	// PROTOCOL + HOSTNAME + PORT - HTTP://SITE.COM:8080
	console.log(location.origin);

	// PORT - 8080
	console.log(location.port);

	// PATH + FILE - PATH/FILE.HTML
	console.log(location.pathname);

	// SEARCH QUERY - ?KEY=VALUE
	console.log(location.search);

	// HASH - #BOOKMARK
	console.log(location.hash);
	</script>
	</head>
	<body></body>
	</html>