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A mixin for underscore.js: Case-insensitive pick that returns an object with keys in the original case. Demo at http://jsfiddle.net/chustedde/Thv2w/
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| _.mixin({ | |
| // Case-insensitive pick that returns an object with keys in the original case | |
| picki : function(obj, keys) { | |
| var copy = {}; | |
| var objKeyList = _.keys(obj); | |
| _.each(keys, function(key) { | |
| _.each(objKeyList, function(o){ | |
| if (key.toString().toLowerCase() === o.toString().toLowerCase()) { | |
| // o is from the list of keys extracted from the object, so | |
| // it's in the original case | |
| copy[o] = obj[o]; | |
| } | |
| }); | |
| }); | |
| return copy; | |
| } | |
| }); | |
| var stuff = {"A":"hello", "B":"world"}; | |
| var theKeys = ["a", "b"]; | |
| alert("Despite the name, I'm very picky\n" + JSON.stringify(_.pick(stuff, theKeys))); | |
| alert("I'm not picky!\n" + JSON.stringify(_.picki(stuff, theKeys))); |
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