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我试图绑定iframe和父窗口,以便我可以在iframe或父窗口中更改/更新observable,并且两个视图都将使用新值更新。Knockoutjs:绑定到父项的foreach中的动态iframes
这里是工作示例:http://jsfiddle.net/NnT78/26/
我已经调整了,我发现有它伟大的工作如下一些示例代码;
HTML:
<iframe src="http://fiddle.jshell.net/zVPF8/11/show/" data-bind="bindIframe: $data"></iframe>
但是,当我把同样的html在foreach绑定它得到一个错误;
HTML:
<ul data-bind="foreach: iframes">
<li>
<iframe data-bind="attr: {src: src}, bindIframe: $data"></iframe>
</li>
</ul>
错误:
Uncaught ReferenceError: Unable to parse bindings.
Bindings value: text: someProperty
Message: someProperty is not defined
这里是我的Knockoutjs视图模型的代码;
ko.bindingHandlers.bindIframe = {
init: function(element, valueAccessor) {
function bindIframe() {
try {
var iframeInit = element.contentWindow.initChildFrame,
iframedoc = element.contentDocument.body;
} catch(e) {
// ignored
}
if (iframeInit)
iframeInit(ko, valueAccessor());
else if (iframedoc){
ko.applyBindings(valueAccessor(), iframedoc);
}
};
bindIframe();
ko.utils.registerEventHandler(element, 'load', bindIframe);
}
};
function ViewModel() {
var self = this;
self.someProperty = ko.observable(123);
self.clickMe = function(data, event) {
self.someProperty(self.someProperty() + 1);
}
self.anotherObservableArray = ko.observableArray([
{ name: "Bungle", type: "Bear" },
{ name: "George", type: "Hippo" },
{ name: "Zippy", type: "Unknown" }
]);
self.iframes = ko.observableArray([
{ src: "http://fiddle.jshell.net/zVPF8/6/show/", type: "Bear" },
{ src: "http://fiddle.jshell.net/zVPF8/6/show/", type: "Hippo" },
{ src: "http://fiddle.jshell.net/zVPF8/6/show/", type: "Unknown" }
]);
};
// Bind outer doc
ko.applyBindings(new ViewModel());
在的foreach绑定单iframe中的工作和动态I帧不工作的样品见http://jsfiddle.net/NnT78/26/。
提前致谢!
优秀!这正是我错过的,谢谢堆完美无缺! – pagemedias