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knockout calculating value based on flag

gvkr asked
Last Modified: 2015-03-01
what i have to do is for the first time i have to do some logic and and change the flag, then after that i have to apply another logic, i did like this, in read, first value for isValid will be true, so it goes to else block where we make it as false from next time it should go inside if block

vm.value = ko.computed(
                   read : function() {
                                             //do some logic

                                                // do some logic                                          
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