检查此http://jsfiddle.net/pTEbA/268/
Object.prototype.getName = function() { var funcNameRegex = /function (.{1,})(/; var results = (funcNameRegex).exec((this).constructor.toString()); return (results && results.length > 1) ? results[1] : "";};function StateViewModel(data){ this.name = ko.observable(); ko.mapping.fromJS(data, mapping, this);}function CityViewModel(data) { this.name = ko.observable(); ko.mapping.fromJS(data, mapping, this);}function StreetViewModel(data) { this.name = ko.observable(); ko.mapping.fromJS(data, mapping, this);}var mapping = { 'cities': { create: function(options) { return new CityViewModel(options.data); } }, 'streets': { create: function(options) { return new StreetViewModel(options.data); } }}var data = { state: {name:'SD', cities:[{name:'Sioux Falls',streets:[{number:1},{number:3}]}, {name:'Rapid City',streets:[{number:2},{number:4}]}]}};var vm = new StateViewModel(data.state)console.log(vm);console.log(vm.getName());console.log(vm.cities());console.log(vm.cities()[0].getName());console.log(vm.cities()[0].streets());console.log(vm.cities()[0].streets()[0].getName());
