Javascript 如何在淘汰中使用下拉列表进行筛选
我刚刚开始使用Knockout,我想通过从下拉列表中选择一个项目来过滤我在UI中显示的数据。到目前为止,我已经得到了,但是我还不能从下拉列表中获得所选的值,然后我需要根据该值实际过滤显示的数据。以下是我目前的代码:Javascript 如何在淘汰中使用下拉列表进行筛选,javascript,jquery,knockout.js,Javascript,Jquery,Knockout.js,我刚刚开始使用Knockout,我想通过从下拉列表中选择一个项目来过滤我在UI中显示的数据。到目前为止,我已经得到了,但是我还不能从下拉列表中获得所选的值,然后我需要根据该值实际过滤显示的数据。以下是我目前的代码: @model Models.Fixture @{ ViewBag.Title = "Fixtures"; Layout = "~/Areas/Development/Views/Shared/_Layout.cshtml"; } @Scripts.Rende
@model Models.Fixture
@{
ViewBag.Title = "Fixtures";
Layout = "~/Areas/Development/Views/Shared/_Layout.cshtml";
}
@Scripts.Render("~/bundles/jqueryval")
<script type="text/javascript" src="@Url.Content("~/Scripts/knockout-2.1.0.js")"></script>
<script type="text/javascript">
function FixturesViewModel() {
var self = this;
var baseUri = '@ViewBag.ApiUrl';
self.fixtures = ko.observableArray();
self.teams = ko.observableArray();
self.update = function (fixture) {
$.ajax({ type: "PUT", url: baseUri + '/' + fixture.Id, data: fixture });
};
self.sortByAwayTeamScore = function () {
this.fixtures.sort(function(a, b)
{ return a.AwayTeamScore < b.AwayTeamScore ? -1 : 1; });
};
self.select = function (team) {
};
$.getJSON("/api/fixture", self.fixtures);
$.getJSON("/api/team", self.teams);
}
$(document).ready(function () {
ko.applyBindings(new FixturesViewModel());
});
</script>
<div class="content">
<div>
<table><tr><td><select data-bind="options: teams, optionsText: 'TeamName', optionsCaption: 'Select...', optionsValue: 'TeamId', click: $root.select"> </select></td></tr></table>
<table class="details ui-widget-content">
<thead>
<tr><td>FixtureId</td><td>Season</td><td>Week</td><td>AwayTeam</td><td><a id="header" data-bind='click: sortByAwayTeamScore'>AwayTeamScore</a></td><td>HomeTeam</td><td>HomeTeamScore</td></tr>
</thead>
<tbody data-bind="foreach: fixtures">
<tr>
<td><span data-bind="text: $data.Id"></span></td>
<td><span data-bind="text: $data.Season"></span></td>
<td><span data-bind="text: $data.Week"></span></td>
<td><span data-bind="text: $data.AwayTeamName"></span></td>
<td><input type="text" data-bind="value: $data.AwayTeamScore"/></td>
<td><span data-bind="text: $data.HomeTeamName"></span></td>
<td><input type="text" data-bind="value: $data.HomeTeamScore"/></td>
<td><input type="button" value="Update" data-bind="click: $root.update"/></td>
</tr>
</tbody>
</table>
</div>
</div>
编辑:解决了这个问题:
<script type="text/javascript">
function FixturesViewModel() {
var self = this;
var baseUri = '@ViewBag.ApiUrl';
self.fixtures = ko.observableArray();
self.teams = ko.observableArray();
self.TeamName = ko.observable('');
self.filteredItems = ko.computed(function () {
var TeamName = self.TeamName();
if (!TeamName || TeamName == "None") {
return self.fixtures();
} else {
return ko.utils.arrayFilter(self.fixtures(), function (i) {
return i.AwayTeamName == TeamName;
});
}
});
self.update = function (fixture) {
$.ajax({ type: "PUT", url: baseUri + '/' + fixture.Id, data: fixture });
};
self.sortByAwayTeamScore = function () {
this.fixtures.sort(function(a, b)
{ return a.AwayTeamScore < b.AwayTeamScore ? -1 : 1; });
};
$.getJSON("/api/fixture", self.fixtures);
$.getJSON("/api/team", self.teams);
}
$(document).ready(function () {
ko.applyBindings(new FixturesViewModel());
});
敲除中的过滤通常是使用。下面是一个基本的ViewModel,它可以根据类型下拉列表进行过滤,包括“无”的过滤选项
var ViewModel = function(data) {
var self = this;
self.filters = ko.observableArray(data.filters);
self.filter = ko.observable('');
self.items = ko.observableArray(data.items);
self.filteredItems = ko.computed(function() {
var filter = self.filter();
if (!filter || filter == "None") {
return self.items();
} else {
return ko.utils.arrayFilter(self.items(), function(i) {
return i.type == filter;
});
}
});
};
这是a中的代码,因此您可以使用它。在淘汰中过滤通常是使用a完成的。下面是一个基本的ViewModel,它可以根据类型下拉列表进行过滤,包括“无”的过滤选项
var ViewModel = function(data) {
var self = this;
self.filters = ko.observableArray(data.filters);
self.filter = ko.observable('');
self.items = ko.observableArray(data.items);
self.filteredItems = ko.computed(function() {
var filter = self.filter();
if (!filter || filter == "None") {
return self.items();
} else {
return ko.utils.arrayFilter(self.items(), function(i) {
return i.type == filter;
});
}
});
};
这是a中的代码,您可以使用它