未捕获的ReferenceError：无法处理绑定＆＃34; visible：function（）{return NeedPaging}＆＃34; 消息：未定义NeedPaging at visible（eval at parseBindingsString（knockout-3.4.2.js：68），：3：60） 在更新（knockout-3.4.2.js：104） 在function.a.B.i（knockout-3.4.2.js：73） 在Function.Uc（knockout-3.4.2.js：52） 在Function.Vc（knockout-3.4.2.js：51） 在Function.U（knockout-3.4.2.js：51） 在Object.a.m.a.B（knockout-3.4.2.js：49） 在击倒-3.4.2.js：73 at Object.r（knockout-3.4.2.js：11） 在m（knockout-3.4.2.js：72）
我得到了任何帮助，非常感谢你提前。 我只是在生产中遇到这个错误，但在我当地它工作得很好我不知道我错过了什么。看起来评论正在删除，这给了我错误。
$(function () {
"use strict";
var PagingVm = function (options) {
var self = this;
self.PageSize = ko.observable(options.pageSize);
self.CurrentPage = ko.observable(1);
self.TotalCount = ko.observable(options.totalCount);
self.PageCount = ko.pureComputed(function () {
return Math.ceil(self.TotalCount() / self.PageSize());
});
self.SetCurrentPage = function (page) {
if (page < self.FirstPage)
page = self.FirstPage;
if (page > self.LastPage())
page = self.LastPage();
self.CurrentPage(page);
};
self.FirstPage = 1;
self.LastPage = ko.pureComputed(function () {
return self.PageCount();
});
self.NextPage = ko.pureComputed(function () {
var next = self.CurrentPage() + 1;
if (next > self.LastPage())
return null;
return next;
});
self.PreviousPage = ko.pureComputed(function () {
var previous = self.CurrentPage() - 1;
if (previous < self.FirstPage)
return null;
return previous;
});
self.NeedPaging = ko.pureComputed(function () {
return self.PageCount() > 1;
});
self.NextPageActive = ko.pureComputed(function () {
return self.NextPage() != null;
});
self.PreviousPageActive = ko.pureComputed(function () {
return self.PreviousPage() != null;
});
self.LastPageActive = ko.pureComputed(function () {
return (self.LastPage() !== self.CurrentPage());
});
self.FirstPageActive = ko.pureComputed(function () {
return (self.FirstPage !== self.CurrentPage());
});
// this should be odd number always
var maxPageCount = 7;
self.generateAllPages = function () {
var pages = [];
for (var i = self.FirstPage; i <= self.LastPage(); i++)
pages.push(i);
return pages;
};
self.generateMaxPage = function () {
var current = self.CurrentPage();
var pageCount = self.PageCount();
var first = self.FirstPage;
var upperLimit = current + parseInt((maxPageCount - 1) / 2);
var downLimit = current - parseInt((maxPageCount - 1) / 2);
while (upperLimit > pageCount) {
upperLimit--;
if (downLimit > first)
downLimit--;
}
while (downLimit < first) {
downLimit++;
if (upperLimit < pageCount)
upperLimit++;
}
var pages = [];
for (var i = downLimit; i <= upperLimit; i++) {
pages.push(i);
}
return pages;
};
self.GetPages = ko.pureComputed(function () {
self.CurrentPage();
self.TotalCount();
if (self.PageCount() <= maxPageCount) {
return ko.observableArray(self.generateAllPages());
} else {
return ko.observableArray(self.generateMaxPage());
}
});
self.Update = function (e) {
self.TotalCount(e.TotalCount);
self.PageSize(e.PageSize);
self.SetCurrentPage(e.CurrentPage);
};
self.GoToPage = function (page) {
if (page >= self.FirstPage && page <= self.LastPage())
self.SetCurrentPage(page);
}
self.GoToFirst = function () {
self.SetCurrentPage(self.FirstPage);
};
self.GoToPrevious = function () {
var previous = self.PreviousPage();
if (previous != null)
self.SetCurrentPage(previous);
};
self.GoToNext = function () {
var next = self.NextPage();
if (next != null)
self.SetCurrentPage(next);
};
self.GoToLast = function () {
self.SetCurrentPage(self.LastPage());
};
}
var MainViewModel = function () {
var self = this;
self.PageSize = ko.observable(10);
self.AllData = ko.observableArray();
self.PagaData = ko.observableArray();
self.ActivePaging = ko.observable(false);
self.Paging = ko.observable(new PagingVm({
pageSize: self.PageSize(),
totalCount: self.AllData.length
}));
self.DeSelect = function (mainModel, event) {
if (event.target.value === self.SelectedSearchOption()) {
self.SelectedSearchOption(null);
event.target.checked = false;
}
return true;
};
self.pageSizeSubscription = self.PageSize.subscribe(function (newPageSize) {
self.Paging().Update({
PageSize: newPageSize,
TotalCount: self.AllData().length,
CurrentPage: self.Paging().CurrentPage()
});
self.RenderAgain();
});
self.currentPageSubscription = self.Paging().CurrentPage.subscribe(function () {
self.RenderAgain();
});
self.RenderAgain = function () {
var result = [];
var startIndex = (self.Paging().CurrentPage() - 1) * self.Paging().PageSize();
var endIndex = self.Paging().CurrentPage() * self.Paging().PageSize();
for (var i = startIndex; i < endIndex; i++) {
if (i < self.AllData().length)
result.push(self.AllData()[i]);
}
self.PagaData(result);
}
self.dispose = function () {
self.currentPageSubscription.dispose();
self.pageSizeSubscription.dispose();
}
}
var vm = new MainViewModel();
ko.applyBindings(vm);
vm.RenderAgain();
}）;
<div data-bind="visible: ActivePaging" class="row" style="display: none;">
<div class="container-fluid">
<div class="row">
<div class="col-sm-3 form-group">
<label>page size</label>
<input class="form-control" type="number" min="1" data-bind="textInput:PageSize" />
</div>
<div class="col-sm-6">
<div class="form-group marg-top-reports">
<!-- ko with:Paging()-->
<ul data-bind="visible: NeedPaging" class="pull-left pagination">
<li data-bind="css: { disabled: !FirstPageActive() }">
<a data-bind="click: GoToFirst">First</a>
</li>
<li data-bind="css: { disabled: !PreviousPageActive() }">
<a data-bind="click: GoToPrevious">Previous</a>
</li>
<!-- ko foreach: GetPages() -->
<li data-bind="css: { active: $parent.CurrentPage() === $data }">
<a data-bind="click: $parent.GoToPage, text: $data"></a>
</li>
<!-- /ko -->
<li data-bind="css: { disabled: !NextPageActive() }">
<a data-bind="click: GoToNext">Next</a>
</li>
<li data-bind="css: { disabled: !LastPageActive() }">
<a data-bind="click: GoToLast">Last</a>
</li>
</ul>
<!-- /ko -->
</div>
</div>
</div>
</div>