我正在構建一個由JQuery項目和Knockout項目組成的網頁。KnockoutJS:無法更新選項值
基本上,該視圖具有選擇字段和由選擇值更改更新的sevond視圖。
我還有一個jQuery自動完成的文本框搜索字段。
我想要做的是當我在搜索框後按回車後,javascript將更新ko.observable值並觸發其更新,但它不工作。我已經成功地觸發按鍵,但我不能更新,並觸發更新..
繼承人的代碼:
function Station(data){
var self = this;
this.userId = ko.observable(data.userid);
this.displayName = ko.observable(data.displayName);
this.email = ko.observable(data.email);
this.redirectURL = ko.computed(function(){
return "/someurl/somerequest?userId="+self.userId();
});
this.selectText = ko.computed(function(){
return self.displayName();
})
}
function currentStation(index)
{
return self.stations()[index];
}
function StationViewModel(){
var self = this;
self.stations = ko.observableArray([]);
$("#stationSelect").attr("disabled,true");
$.getJSON("@{someurl.getStationList()}",function(allData){
var mappedStations = $.map(allData,function(item)
{
return new Station(item);
});
self.stations(mappedStations);
$("#stationSelect").attr("disabled,false");
});
url = "/someurl/somerequest?userId=";
this.selectedStation = ko.observable();
this.redirectToStation = function(){
var linkToSend =
alert(self.selectedStation.redirectURL());
}
<!-- THIS IS THE CODE THAT HAS TO UPDATE THE FIELD BUT IT DOESN'T-->
this.getStation = function(event)
{
for(i = 0; i<this.stations().length;i++)
{
if(this.stations()[i].userId()==$("#search").val())
{
self.selectedStation = ko.observable(this.stations()[i]); //Am i doing it right?
}
}
};
}
<!-- This is the code That handles the click event inside the textbox. its working -->
ko.bindingHandlers.executeOnEnter = {
init: function (element, valueAccessor, allBindingsAccessor, viewModel) {
var allBindings = allBindingsAccessor();
$(element).keypress(function (event) {
var keyCode = (event.which ? event.which : event.keyCode);
if (keyCode === 13) {
allBindings.executeOnEnter.call(viewModel);
return false;
}
return true;
});
}
};
ko.applyBindings(new StationViewModel());
</script>
你介意投入
<form>
標籤來包裝<input>
所以這成爲你正在使用的標記jsfiddle。 – madcapnmckay 2012-03-28 16:25:13
對不起,但我無法設法將我的代碼放入jsfiddle ..也看起來像他們沒有在他們的選擇knockoutjs ... – dreampowder 2012-03-29 11:22:42
您可以在資源部分添加KO。你可以把這一個http://jsfiddle.net/madcapnmckay/eHqj6/ – madcapnmckay 2012-03-29 17:07:14