knockout-3.0

I have two grid structure, In one of them I have multiple fields multiple times, whereas, in one I have two fields single time. I write apply method for each grid my first grid id working fine, but when I am clicking apply on second grid I am getting this error Uncaught TypeError: Converting circular structure to JSON Here are both the apply methods: self.applyRate = function (loan) { // commit the edit transaction self.editTransaction.notifySubscribers(null, "commit"); alert(ko.toJSON({data:loan})); // hides the edit fields self.editingItem(null); }; self.apply = function (data) { // commit

What's the difference between computed and pureComputed in KnockoutJS? Can I use pureComputed instead of computed safely? johannesMatevosyan I agree with the @Jeroen and I would like to add a short example from J. Munro's book which helped me a lot so this might be helpful for others as well. First of all, pureComputed observables are quite similar to the computed observables with several performance and memory improvements. The name is borrowed from the Pure function programming term and it means that any function which uses only local variable is potentially pure, whereas any function that