如何在淘汰赛中创建可计算的可观察数组 [英] How to create a computed observable array in Knockout

问题描述

我想知道如何创建一个可计算的可观察数组.

I would like to know how to create a computed observable array.

在我的视图模型中，我有2个可观察数组，我想有一个将两个数组组合在一起的计算可观察数组.

In my view model, I have 2 observable arrays, and I would like to have a computed observable array that is simply both arrays combined.

function ViewModel() {
    var self = this;
    self.listA= ko.observableArray([]);
    self.listB = ko.observableArray([]);
    self.masterList= //combine both list A and B

推荐答案

这将合并两个数组并返回合并后的列表.但是，它不是一个可计算的可观察数组(甚至不知道这是否可能)，而是一个规则的可计算的可观察数组.

This will combine the two arrays and return the combined list. However, it is not a computed observable array (don't know if that is even possible), but a regular computed observable.

self.masterList = ko.computed(function() {
    return this.listA().concat(this.listB());
}, this);

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