remove不是可观察数组中的函数

Question

I made an observableArray in knockoutjs and I want to remove items from that array and tried as

self.work_days = ko.observableArray();

self.work_days().push(new WorkDayVM({}, date))
//WorkDayVM is a view model and date is date object this works fine and values are //assigned well in array.

But when trying to remove as

self.work_days.remove(days_to_remove[i]);
//also tried as self.work_days().remove(days_to_remove[i]);

I also tried as

for(var i = 0; i < days_to_remove.length; i++){
 self.work_days.remove(function(item){
   return item.work_days.day_string == days_to_remove[i].day_string;
 });
}

But I always get the same error

self.work_days().remove is not a function

Answer 1

self.work_days().remove is not a function

Try calling .remove() (and .push()) directly on observableArray instead of trying to call it on the array value. self.work_days.remove instead of self.work_days().remove

http://jsfiddle.net/NNU77/

Answer 2

self.work_days（）。push（new WorkDayVM（{}，date））应该是self.work_days.push（new WorkDayVM（{}，date））），然后删除而不带（）