如何利用基因敲除验证

Question

来调用视图模型isValid（）的函数我已经定义了一个视图模型如下：

var ViewModel = function() { 
    var self = this; 
    self.property1 = ko.observable().extend({ required: true }); 
    self.property2 = ko.computed(function() { 
     return self.property1(); 
    }); 
    self.form_onsubmit = function (form) { 
     if (!self.isValid()) { 
      console.log("error"); 
     } 
     return false; 
    }; 
}; 

$(function() { 
    ko.applyBindingsWithValidation(new ViewModel()); 
}); 

当我打电话form_onsubmit功能，出现错误：

TypeError: self.isValid is not a function 
if (!self.isValid()) { 

如何要解决它，谢谢^^^

Answer 1

添加

self.errors = ko.validation.group(self);

to your viewmodel