Created
June 15, 2011 18:14
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JavaScript: What's New? List properties that have been added to an object between a starting and ending point.
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| // What's New? - v0.1.0 - 6/15/2011 | |
| // http://benalman.com/ | |
| // Copyright (c) 2011 Ben Alman; Licensed MIT, GPL | |
| var whatsnew = (function() { | |
| // Stuff. | |
| var cache = []; | |
| // Return a new object that has all the properties of the original object, but | |
| // set to true. | |
| function getprops(obj) { | |
| var props = {}; | |
| for ( var prop in obj ) { | |
| if ( obj.hasOwnProperty(prop) ) { | |
| props[prop] = true; | |
| } | |
| } | |
| return props; | |
| } | |
| return { | |
| // newprops.start('window', window); // initialize the cache. | |
| start: function(name, obj) { | |
| cache[name] = {obj: obj, props: getprops(obj)}; | |
| }, | |
| // newprops.end('window'); // see what props have been added and log. | |
| end: function(name) { | |
| var c = cache[name]; | |
| var current = getprops(c.obj); | |
| var result = []; | |
| for ( var prop in current ) { | |
| current.hasOwnProperty(prop) && !c.props[prop] && result.push(prop); | |
| } | |
| delete cache[name]; | |
| console.log(result.length + ' properties introduced in ' + name + ': %o', result); | |
| } | |
| }; | |
| }()); |
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| <!DOCTYPE HTML> | |
| <html lang="en-US"> | |
| <head> | |
| <meta http-equiv="content-type" content="text/html; charset=utf-8"> | |
| <title>something-scary.js test</title> | |
| <script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.js"></script> | |
| <script src="https://raw.github.com/gist/1027709/ba-whatsnew.js"></script> | |
| <script> | |
| // initialize | |
| whatsnew.start('window', window); | |
| whatsnew.start('$', $); | |
| whatsnew.start('$.fn', $.fn); | |
| </script> | |
| <script src="something-scary.js"></script> | |
| <script> | |
| // log to console | |
| whatsnew.end('window'); | |
| whatsnew.end('$'); | |
| whatsnew.end('$.fn'); | |
| </script> | |
| </head> | |
| <body> | |
| ... | |
| </body> | |
| </html> |
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