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vcesjp on 01/20/08


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javascript textmate


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arcturus


makeProperty

Published in: JavaScript 

O'Reilly Media | JavaScript: The Definitive Guide
http://www.oreilly.com/catalog/jscript5/


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  1. /*
  2. * O'Reilly Media | JavaScript: The Definitive Guide
  3. * http://www.oreilly.com/catalog/jscript5/
  4. */
  5. function makeProperty (o,name,predicate) {
  6. 	var value;
  7.  
  8. 	o["get"+name]=function() { return value; };
  9.  
  10. 	o["set"+name]=function(v) {
  11. 			if( predicate && !predicate(v) ){
  12. 				throw new Error("set"+name+": invalid value "+ v);
  13. 			}else{
  14. 				value=v;
  15. 			}
  16. 		};
  17. }
  18.  
  19. var o={};
  20. makeProperty(o,"Name", function(x) { return typeof x=="string"; } );
  21. o.setName("myObj");
  22. print(o.getName());

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