Javascript WinJS.Binding.List投影上的原型
我希望能够在WinJS.Binding.List投影(例如createFiltered)上使用原型方法 例如:Javascript WinJS.Binding.List投影上的原型,javascript,winjs,Javascript,Winjs,我希望能够在WinJS.Binding.List投影(例如createFiltered)上使用原型方法 例如: WinJS.Binding.List.prototype.shoutLength = function () { console.log("MY LENGTH IS " + this.length); } var list = new WinJS.Binding.List([2,1,3]); var filtered = list.createFiltered(functi
WinJS.Binding.List.prototype.shoutLength = function () {
console.log("MY LENGTH IS " + this.length);
}
var list = new WinJS.Binding.List([2,1,3]);
var filtered = list.createFiltered(function (item) { return item <= 2; });
list.length; // outputs 3
filtered.length; // outputs 2
list.shoutLength(); // works
filtered.shoutLength(); // doesn't work (Object doesn't support property or method 'shoutLength')
WinJS.Binding.List.prototype.shoutLength=函数(){
log(“我的长度是”+这个长度);
}
var list=new WinJS.Binding.list([2,1,3]);
var filtered=list.createFiltered(函数(项){return item方法,如createdFilterd
,createSorted
等,根据名称创建不同的对象,
因此,您需要扩展这些,在您的情况下,它将是:
WinJS.Binding.GroupedSortedListProjection,
WinJS.Binding.FilteredListProjection,
WinJS.Binding.SortedListProjection