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Option Hash Using jQuery

/ Published in: JavaScript
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If you have a complex function you may need to pass it lots of arguments. Instead of having to remember how many you need to pass, and passing 'null' for un needed arguments, pass the function an object.

Now you can set the defaults inside the function, which will be superseeded if they are passed as an argument.

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  1. var complex = function(valA, options){
  2. 		/**
  3. 		 * Set the default values in the object, then extend it to include the
  4. 		 * values that we passed to it.
  5. 		*/
  6. 		var settings = $.extend({
  7. 			option1: null,
  8. 			option2: null,
  9. 			option3: null,
  10. 			option4: null
  11. 		},options||{});//If no options, pass an empty object
  12. 		console.warn(valA);
  13. 		console.log(settings.option1);
  14. 		console.log(settings.option2);
  15. 		console.log(settings.option3);
  16. 		console.log(settings.option4);
  17. 	};
  18. 	complex('Value A', {option1: 'this is option 1'});

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