Javascript 如何在winjs的repeater元素中绑定click事件?
我可以通过以下方式创建转发器:Javascript 如何在winjs的repeater元素中绑定click事件?,javascript,windows,windows-phone-8,winjs,Javascript,Windows,Windows Phone 8,Winjs,我可以通过以下方式创建转发器: <div class="gameField" id="gameField" data-win-control="WinJS.UI.Repeater" data-win-options="{ data: GameField.cells}"> <div class="gameCell"> <img data-win-bind="src: symbol GameField.cellSymbol
<div class="gameField" id="gameField" data-win-control="WinJS.UI.Repeater" data-win-options="{ data: GameField.cells}">
<div class="gameCell">
<img data-win-bind="src: symbol GameField.cellSymbolToImg" width="100" height="100" />
</div>
</div>
和js
var Cell = WinJS.Class.define(function(number) {
this.number = number;
this.symbol = "";
});
var getCellsList = function () {
var cells = [];
for (var i = 1; i < 10; i++) {
var cell = new Cell(i);
cells.push(cell);
}
return cells;
};
var cellsList = new WinJS.Binding.List(getCellsList());
WinJS.Namespace.define("GameField", {
cells: cellsList,
cellSymbolToImg: WinJS.Binding.converter(function (symbol) {
return symbol == "" ? "" : "symbol_" + symbol + ".png";
})
});
var Cell=WinJS.Class.define(函数(编号){
这个数字=数字;
此符号为“”;
});
var getCellsList=函数(){
var单元格=[];
对于(变量i=1;i<10;i++){
var单元=新单元(i);
细胞。推(细胞);
}
返回单元;
};
var cellsList=new WinJS.Binding.List(getCellsList());
定义(“游戏场”{
细胞:细胞列表,
cellSymbolToImg:WinJS.Binding.converter(函数(符号){
返回symbol==“”?“”:“symbol”+symbol+.png”;
})
});
但是,如何将click事件绑定到某个函数,以便从该函数中访问底层单元格对象呢?使用function.bind方法可以很简单地做到这一点,您甚至可以在单元格类中直接使用处理程序
var Cell = WinJS.Class.define(function(number) {
var e = document.createElement("div"); //...and initialize however.
this.element = e;
e.winControl = this;
this.number = number;
this.symbol = "";
//Also consider using pointerDown event here instead of click; might respond quicker
e.addEventListener("click", this._click.bind(this));
}, {
//Instance members
_click: function (e) {
//Your handler. "this" will be the instance of Cell that was clicked
}
});
如您所见,this.\u click函数引用实例成员单元格。\u click。调用此函数的bind方法就是在该方法中指定要用作“this”的确切对象的方式。如果不调用.bind(this),处理程序仍将被调用,但“this”将是全局上下文,而不是您关心的对象。对不起,我从未运行过您的解决方案,但我 我找到了另一种在中继器中绑定单击的方法。我将只是发布我的导航样本
<ul data-win-control="WinJS.UI.Repeater" data-win-bind="winControl.data: navigations">
<li data-win-control="Navigation.NavigationItem" data-win-bind="winControl.data: this">
<span data-win-bind="textContent: Name; className: Selected;"></span>
<span data-win-bind="textContent: Selected;"></span>
</li>
</ul>
添加的项目如下所示:
WinJS.Namespace.define("Navigation", {
dataBinding: WinJS.Binding.as({
navigations: new WinJS.Binding.List([]),
}),
NavigationItem: WinJS.Class.define(
function (element, options) {
this.element = element;
this.element.onclick = function (event) {
var item = this.winControl.data;
// Handle your onclick here
// for example:
item.clickHandler();
};
}
),
});
Navigation.dataBinding.navigations.push(WinJS.Binding.as({
Name: "Home",
Page: "/pages/home/home.html",
// more... for example:
clickHandler: function() {
// Do Something
};
}));
谢谢这正是我想要的。你能提供更多关于你是如何在单元格构造函数中调用addEventListener的信息吗?谢天谢地,我忽略了那部分。我更正了上面的回答,以显示构造函数正在创建要添加侦听器的元素。如果我通过
WinJS.UI.Repeater
自动绑定元素,这将如何工作?因为绑定发生在这里:select.setAttribute('data-win-bind','value:version;onchange:versionChangeHandler')
,目的是绑定到选项卡中当前的读卡器
对象。读卡器
数组正在中继器中使用:var rptr=new WinJS.UI.repeater(rptrDiv,{“data”:tab.readers,“template”:template})代码>。(versionChangeHandler
是Reader
类型的类方法(使用TypeScript))