javascript - Knockout JS 中的 validateObservable - undefined 不是函数

Question

你好，

我正在尝试验证我这边的一个非常大的表单，并且基本上重写了我所有的 viewModel 代码以便可以对其进行验证。问题是 ko.validatedObservable() 由于某种原因似乎不存在。我使用了 this site 的代码，老实说，我看不出我的代码有什么问题。这是一个示例:

var someNameSpace= {};

    someNameSpace.bindData = function () {
        someNameSpace.viewModel =
        someNameSpace.initViewModel("123456", "username1", "address1", "address2", "city");

        ko.applyBindings(this.viewModel);
    }

someNameSpace.initViewModel = function (partnerId, username, address1, address2, city) {
    console.log(ko);
    var someViewModel = ko.validatedObservable({ //<----FAILS HERE
        partnerId: ko.observable(partnerId).extend({ required: "This field is required", number: true }),
        username: ko.observable(username).extend({ required: "This field is required" }),
        address1: ko.observable(address1).extend({ required: "This field is required" }),
        address2: ko.observable(address2).extend({ required: "This field is required" }),
        city: ko.observable(city).extend({ required: "This field is required" }),
    });

    var validationOptions = { insertMessages: true, decorateElement: true };
    ko.validation.init(validationOptions);

    return someViewModel ;
}

$(document).ready(function () {
    someNamespace.bindData();
});

在该站点上，它声称使用 ko.validatedObservable 来检查用户是否正确输入了字段。我对 knockoutJS 还是很陌生 - 我能做什么？

Answer 1

您需要包含对 'knockout.validation.js' 库的引用。

knockout.validation.js

https://rawgit.com/ericmbarnard/Knockout-Validation/master/Src/knockout.validation.js

GitHub 引用

https://github.com/Knockout-Contrib/Knockout-Validation