ko.observableArray（）不添加元素

Question

I'm trying out KO but have problems getting observableArray to work, the code is very simple

​var test = new ko.observableArray();
var regulararray = [];

test.push("item");
regulararray.push("regularpush");
console.log("the length for ko: " + test.length + " the length for regular array: " +    regulararray.length);​​

For some reason the length of the knockout array is 0 while the regular array length is 1.

Why is this happening?

Answer 1

使用test().length而不是test.length