javascript - 为什么 knockoutjs 没有正确绑定？

Question

为什么这段代码在 3 秒后没有改变？我究竟做错了什么？

<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

因为你一直在制作一个新的 observable ......而且你的函数总是将它设置为“true”

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