JS
function NotificationsViewModel()
{
this.months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov','Dec'];
this.activeMonth = ko.observable(10);
}
ko.applyBindings(new NotificationsViewModel());
HTML
<ul data-bind="foreach: months">
<li data-bind="css:{'selected-month': $index == $root.activeMonth()}">
<span data-bind="text: $index"></span> : <span data-bind="text: $data"></span>
</li>
</ul>
最佳答案
您应该解开 $index
值:
<ul data-bind="foreach: months">
<li data-bind="css:{'selected-month': $index() == $root.activeMonth()}">
<span data-bind="text: $index"></span> : <span data-bind="text: $data"></span>
</li>
</ul>
关于javascript - knockoutJS $index 无法正常工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13530900/