爲什麼knockoutjs不能正確綁定？

Question

爲什麼this code在3秒後沒有改變？我究竟做錯了什麼？

<div data-bind="visible: isBusy()"> 
is busy 
</div> 

<div data-bind="visible: !isBusy()"> 
is not busy 
</div> 



var viewModel; 
function AppViewModel() { 
    var self = this; 
    self.isBusy = ko.observable(true); 
} 

function isNotBusyAnymore() { 
    viewModel.isBusy = ko.observable(true); 
} 

viewModel = new AppViewModel(); 
ko.applyBindings(viewModel); 
setTimeout(isNotBusyAnymore, 3000); 

Answer 1

因爲你不斷建立新的觀察到....，也是你的函數總是將其設置爲「真」

function isNotBusyAnymore() { 
    viewModel.isBusy(false); 
}