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Exceptions in JavaScript

/ Published in: JavaScript
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An example taken from JavaScript: The good parts showing how to catch an exception.

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  1. var sum = function(){
  2. 	var value = 0;
  3. 	for(i=0;i<arguments.length;i++){
  4. 		if(typeof arguments[i] !== 'number'){
  5. 			throw {
  6. 				name: 'TypeError',
  7. 				message: 'That wasn\'t a number fool!'
  8. 			}
  9. 		} else {
  10. 			value += arguments[i];
  11. 		}
  12. 	}
  13.  
  14. 	alert(value);
  15. }
  16.  
  17.  
  18. var sumMe = function(){
  19. 	try {
  20. 		sum(45,33,"string",89,12,354, true);
  21. 	} catch(e){
  22. 		document.write(e.name + ': ' + e.message);
  23. 	}
  24. }
  25.  
  26. sumMe();

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