Knockout.js 淘汰验证不适用于多个VM

出于某种奇怪的原因，敲除验证不起作用

这是我的密码：

var searchViewModel = function () {
    this.priceTo = ko.observable();
    ...
}

var searchVM = new searchViewModel();
searchViewModel["errors"] = ko.validation.group(searchViewModel );
var validationOptions = {
    insertMessages: true,
    decorateElement: true,
    errorElementClass: "errorFill",
    errorMessageClass: "errorFill"
};
ko.validation.init(validationOptions);

ko.applyBindings(searchVM, $("#searchSection")[0]);

我还试图修改

searchViewModel["errors"] = ko.validation.group(searchViewModel);

像这样：

searchVM["errors"] = ko.validation.group(searchVM);

---

没有任何结果。

您能用代码添加JSFIDLE吗？this.firstName=ko.observable（“”）.extend（{required:{message:“Name是必需的”，params:true}）；