淘汰赛JS-如何为可观察字段返回空字符串 [英] Knockout JS - How to return empty strings for observable fields

问题描述

我正在构建一个CRUD系统，用户可以在其中添加，删除和编辑简单表中的数据.我有一个模式表单，用于显示其他详细信息并添加新事件.当前，模态表单可以正确加载以进行编辑，但是在尝试添加新事件时会遇到问题.

Im building a CRUD system where users can add, delete and edit data from a simple table. I have a modal form that is used to show additional details and also adding new incidents. Currently the modal form loads correctly for editing but has issues when trying to add a new incident.

经过一些调试后，问题似乎出在此行:

After some debuging it seems that the issue comes from this line:

self.currentIncident(null);

这破坏了我的模态形式，因为我的可观察物返回了null(显然).我希望它会返回如下内容:

This breaks my modal form because my observable is coming back null (obviously). I was hoping that it would return something like the following:

"ID": "",
"Description": "",
"Incident": ""

我相信这就是我的模态崩溃的原因，因为我的模态与返回值混淆了.有人会知道一种简单的方法来返回空字符串吗?

I believe this is why my modal is crashing since my modal is confused with the return. Would someone know of an easy method to return empty strings?

  self.AddNewIncident = function() {
    var id = this.ID;
    self.showModal(true);
    self.currentIncident(null);
  };

这是jsfiddle: http://jsfiddle.net/rqwku4kb/12/

Here is jsfiddle: http://jsfiddle.net/rqwku4kb/12/

推荐答案

输入{}而不是null，像这样:

self.currentIncident({});

检查小提琴

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