knockout.js partial mapping from json -
 on knockout.js site's documentation when data server can this:  // every time data received server: ko.mapping.fromjs(data, viewmodel);  i'd partially map data object model. possible?  i have viewmodel.jobs[i].jobtype child object, i'd this:  ko.mapping.fromjs(data.jobtype, viewmodel.jobs[i].jobtype);  ... meaning i'd map in jobtype result server specific job's jobtype field.  ... keeping in mind:  // not work because viewmodel.jobs[i].jobtype() not function. viewmodel.jobs[i].jobtype(data.jobtype);     this worked:  ko.mapping.fromjs(data.job, viewmodel.jobs[i]);