Created
March 19, 2013 13:13
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An experiment with js that adds its source to the page when it runs.
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script> | |
| "use strict"; | |
| function showme() { | |
| var scripts = document.getElementsByTagName('script'), | |
| ln = scripts.length, | |
| script = scripts[ln - 1], | |
| node = script.firstChild, | |
| output = [], | |
| showmeCall = /[ \t]*showme[ \t]*\([ \t]*\)[ \t]*;?[ \t]*\n?/g, | |
| part, pre, code; | |
| while (node) { | |
| part = node.textContent; | |
| part = part.replace(showmeCall, ""); | |
| output.push(part); | |
| node = node.nextSibling; | |
| } | |
| document.write("\u003Cpre\u003E\u003Ccode\u003E"); | |
| document.write(output.join("")); | |
| document.write("\u003C/code\u003E\u003C/pre\u003E"); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <p>This is a test of the self-documenting javascript!</p> | |
| <script>showme(); | |
| alert("Look! This script runs, and injects itself into the page!"); | |
| </script> | |
| <p>Pretty neat, huh?</p> | |
| </body> | |
| </html> |
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