Twitter bootstrap 淘汰可观察到的更新,但不更新用户界面?
我在测试函数中更新了可观察项属性。 此更新已成功更新可观察项 因为我在调试中检查它 但标签并没有更新。 怎么了 我尝试item.servicesult=ko.observable(“测试…”); 和其他东西,但用户界面标签不更新 Javascript代码:Twitter bootstrap 淘汰可观察到的更新,但不更新用户界面?,twitter-bootstrap,knockout.js,Twitter Bootstrap,Knockout.js,我在测试函数中更新了可观察项属性。 此更新已成功更新可观察项 因为我在调试中检查它 但标签并没有更新。 怎么了 我尝试item.servicesult=ko.observable(“测试…”); 和其他东西,但用户界面标签不更新 Javascript代码: var ViewModel = function (myPano) { var observablePano = ko.utils.arrayMap(myPano, function (panoData) {
var ViewModel = function (myPano) {
var observablePano = ko.utils.arrayMap(myPano, function (panoData) {
return {
panoNo: ko.observable(panoData.panoNo),
modemNo: ko.observable(panoData.modemNo),
aydinlatmaNo: ko.observable(panoData.aydinlatmaNo),
geneltuketimNo: ko.observable(panoData.geneltuketimNo),
serviceResult: ko.observable(panoData.serviceResult),
test: function (item) {
alert(item.panoNo());
item.serviceResult = "TESTING...";
}
};
});
this.Panos = ko.observableArray(observablePano);
};
$(function () {
var viewModel = new ViewModel(
[
{ panoNo: '1', modemNo: '', aydinlatmaNo: '', geneltuketimNo: '', serviceResult: '.' },
{ panoNo: '2', modemNo: '', aydinlatmaNo: '', geneltuketimNo: '', serviceResult: '.' },
{ panoNo: '3', modemNo: '', aydinlatmaNo: '', geneltuketimNo: '', serviceResult: '.' },
{ panoNo: '4', modemNo: '', aydinlatmaNo: '', geneltuketimNo: '', serviceResult: '.' },
{ panoNo: '5', modemNo: '', aydinlatmaNo: '', geneltuketimNo: '', serviceResult: '.' },
{ panoNo: '6', modemNo: '', aydinlatmaNo: '', geneltuketimNo: '', serviceResult: '.' }
]
);
ko.applyBindings(viewModel);
});
html : <div class="row show-grid" data-bind="foreach: Panos">
<div class="col-xs-6 col-md-4">
<table>
<tr>
<td>
<form class="form-horizontal">
<fieldset>
<div class="input-group">
<input type="text" placeholder="PANO NO" class="form-control" data-bind="value: panoNo">
</div><div class="input-group">
<input type="text" placeholder="MODEM NO" class="form-control" data-bind="value: modemNo">
</div><div class="input-group">
<input type="text" placeholder="AYDINLATMA SAYAÇ NO" class="form-control" data-bind="value: aydinlatmaNo">
</div><div class="input-group">
<input type="text" placeholder="GENEL TÜKETİM SAYAÇ NO" class="form-control" data-bind="value: geneltuketimNo">
</div>
</fieldset>
</form>
</td>
<td>
<button type="button" class="btn btn-primary" data-bind="click: test">Testi Başlat</button>
<br />
<span class="label label-default" data-bind="text: serviceResult"></span>
</td>
</tr>
</table>
</div>
</div>
var ViewModel=函数(myPano){
var observePano=ko.utils.arrayMap(myPano,函数(panoData){
返回{
panoNo:ko.可观测(panoData.panoNo),
modemNo:ko.可观察(panoData.modemNo),
Aydinatmano:ko.可观测(panoData.Aydinatmano),
geneltuketimNo:ko.可观察(panoData.geneltuketimNo),
serviceResult:ko.可观察(panoData.serviceResult),
测试:功能(项目){
警报(item.panno());
item.servicesult=“测试…”;
}
};
});
this.Panos=ko.observableArray(observablePano);
};
$(函数(){
var viewModel=新的viewModel(
[
{panoNo:'1',modemNo:'',aydinlatmaNo:'',geneltuketimNo:'',servicesult:'.'},
{panoNo:'2',modemNo:'',aydinlatmaNo:'',geneltuketimNo:'',servicesult:'.'},
{panoNo:'3',modemNo:'',aydinlatmaNo:'',geneltuketimNo:'',servicesult:'.'},
{panoNo:'4',modemNo:'',aydinlatmaNo:'',geneltuketimNo:'',servicesult:'.'},
{panoNo:'5',modemNo:'',aydinlatmaNo:'',geneltuketimNo:'',servicesult:'.'},
{panoNo:'6',modemNo:'',aydinlatmaNo:'',geneltuketimNo:'',servicesult:'.}
]
);
应用绑定(视图模型);
});
html:
巴伊拉特睾丸
尝试item.servicesult(“测试”)代码>
如果您只是将一个新值分配给一个可观察的变量,则不会发生任何事情:
item.serviceResult = ko.observable("1");
//apply bindings, Label will Display 1
item.serviceResult = ko.observable("2");
//Label is still bound to the observable that contains "1", you'd have to reassign bindings to find that it should now bind to some other observable
相反:
item.serviceResult("2");
//assign new value into the existing observable! this will update the UI as the ui is bound to this observable object
我希望这能解释一点。这是真的,我忘记了。现在是2020年,但多亏了六年前你的回答。。在没有深刻理解的情况下,保持淘汰赛并不容易。。。