14443 2011-10-12 23:48:27 +0000 Introduce Text.isWhiteSpace? 2011-12-20 20:06:11 +0000 1 1 1 Unclassified WebAppsWG DOM unspecified PC All RESOLVED WONTFIX P2 normal --- 1 annevk annevk erik.arvidsson jonas mathias mike Ms2ger shadow2531 www-dom public-webapps-bugzilla oldest_to_newest 58167 0 annevk 2011-10-12 23:48:27 +0000 Basically an attribute that returns whether the Text node consists solely of space characters. (This is a slightly changed Text.isElementContentWhitespace (from its originaly definition anyway) with a better name.) 58177 1 zcorpan 2011-10-13 06:06:04 +0000 Use case being? :-) 58722 2 erik.arvidsson 2011-10-23 20:31:57 +0000 I don't think it is worth polluting the API with something that seems not very common and which is quite easily done today. /^\s*$/.test(textNode.data) or textNode.data.trim() === '' If one really wants it than the following would also work: Object.defineProperty(Text.prototype, 'isWhitespace', { get: function() { return /^\s*$/.test(this.data); }, configurable: true, enumerable: true }); 58724 3 jonas 2011-10-23 21:26:50 +0000 Except that at least in Gecko we could write a significantly faster implementation than can be written in javascript. The reason is that we cache information about if a node is white-space only in order to speed up CSS rendering. I would have guessed that other engines does this too. So if people actually write code like in your examples, then I think we should provide a faster built-in implementation. The question is if people do write code like that. So far it appears that isn't the case so I'm happy to WONTFIX this bug until someone comes up with use cases. 58731 4 annevk 2011-10-24 09:11:53 +0000 Last I checked CSS whitespace is different from HTML whitespace and both are totally different from JavaScript whitespace. 61838 5 annevk 2011-12-20 20:06:11 +0000 WONTFIX per comment 3.