淘汰赛:使用动态键在ko可观察数组中推送值

问题描述

我想用动态键在数组中添加推入值.我使用以下代码:

I want to add push value in array with dynamic key. I use this below code :

this.customOptionVal.push({name:value});

this.customOptionVal是ko.observableArray()

以上代码的输出为:

0: {name: "stack"}

我想要这样的输出:

mykey: {name: "stack"}

该怎么做?

推荐答案

如果可以使用简单的observable而不是observableArray(因为数组将始终使用索引而不是自定义键)，则可以将customOptionVal设置为可观察对象:customOptionVal = ko.observable({})

If you can use a simple observable and not an observableArray (because arrays will always use indices and not custom keys), you can set that customOptionVal is an observable object: customOptionVal = ko.observable({})

现在，您可以使用customOptionVal()访问可观察对象内部的对象，然后可以将密钥添加到该对象中，例如:customOptionVal()[yourKeyHere] = {name: "stack"}.

Now you can access the object inside the observable with customOptionVal(), then you can add your key in this object, something like: customOptionVal()[yourKeyHere] = {name: "stack"}.

请参见下文以获取更好的示例

See below for a better example

var customOptionVal = ko.observable({});
customOptionVal()['myKey'] = {name:"stack"};

console.log(customOptionVal())

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script>

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