动态绑定的元素，applyBindingsToNode不响应更改 [英] Dynamically bound elements with applyBindingsToNode not responding to changes

问题描述

在此示例中，我具有动态绑定的输入和div相同的属性. 但是在更改输入中的文本时，更改不会反映在div元素中.

In this example I have a dynamically bound input and div to the same property. But on altering text in input, changes are not reflected in the div element.

http://jsfiddle.net/rpuri/Bcps5/

ko.applyBindingsToNode(document.getElementById('input-health'), {
    value: vm.status(),
    valueUpdate: 'afterkeydown'
});

声明性绑定对我来说不是一个选择，因为我需要绑定到局部视图(ASP.NET MVC)中的共享元素.

Declarative binding is not an option for me because I need to bind to shared elements in partial views (ASP.NET MVC).

谢谢

推荐答案

您将绑定到可观察对象的值，而不是可观察对象本身.

You are binding to the value of the observable instead of the observable itself.

尝试:

ko.applyBindingsToNode(document.getElementById('health'), {
    text: vm.status, // <- not invoking status, binding to the observable itself.
    valueUpdate: 'keydown'
});

ko.applyBindingsToNode(document.getElementById('input-health'), {
    value: vm.status,  
    valueUpdate: 'keydown'
});

http://jsfiddle.net/hwQsm/

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