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我正在嘗試我的手在Knockout.js的自動完成處理程序,我正在尋找一些反饋。目前這種方法很有效,但我試圖看看是否可以在沒有這麼多Eval()的情況下完成工作,並且爲了可重用性,請查看是否有方法在不預先假定的情況下引用ViewModel被命名爲'vm',如下所示。Knockout.js自動完成綁定處理器
用法:
<input placeholder="Test..." type="search" data-bind="autoComplete:$root.persons, source:'/api/Person/', parameterName:'searchString', labelKey:'displayName', valueKey:'urid', onSelected:'addPerson'" autocomplete="off" />
JS:
ko.bindingHandlers.autoComplete = {
init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
var postUrl = allBindingsAccessor().source; // url to post to is read here
var param = allBindingsAccessor().parameterName;
var labelKeyName = allBindingsAccessor().labelKey;
var valueKeyName = allBindingsAccessor().valueKey;
var selectedFunction = allBindingsAccessor().onSelected;
var selectedObservableArrayInViewModel = valueAccessor();
$(element).autocomplete({
minLength: 2,
autoFocus: true,
source: function (request, response) {
$.ajax({
url: param != null ? postUrl : postUrl + request.term,
data: param == null ? '' : param + "=" + request.term,
dataType: "json",
type: "GET",
success: function (data) {
response($.map
(data, function (obj) {
return {
label: eval("obj." + labelKeyName),
value: eval("obj." + valueKeyName)
};
}));
}
});
},
select: function (event, ui) {
if (selectedFunction != null) {
var functionCall = 'vm.' + selectedFunction + "(event, ui)";
eval(functionCall);
}
}
});
}
};
你知道你不_need_'的eval()'通過名稱訪問屬性可以發現,只要做'obj [propertyName]',你明白了... – 2013-04-08 00:40:01