{} and function () {} to use empty object {} to store Keyvalue_javascript tips

Try must lose, wrote a use of the Operation URL JS Tool class, this class has a property called QueryString, my original approach is to let Querystring=function () {},

The idea is to want to be able to querystring[key] or querystring (Key[,value]), which is supported by both ways, calling key case sensitive through Querystring[key

With QueryString (key), it can be case independent.

Today's cup with the discovery URL with the name parameter is not set up anyway, suddenly remembered QueryString is an anonymous function, name,length and other attributes are read-only,

Or the ground obediently changed into querystring = {}; Use a different param (Key[,value]) to implement case-insensitive functionality.

Today's conclusion is that the field used to put KeyValue is best not to use function () {} so that there is already a type of built-in property to store the keyvalue.