剔除将视图模型重置为原始数据 [英] knockout reset viewmodel to original data

问题描述

将敲除视图模型重置回原始数据的最佳方法是什么?

what is the best way to reset knockout viewmodel back to the original data?

如果原始数据json没有更改，对可观察对象进行一些更改后，如何将其重新设置?就像刷新页面一样.

if the original data json is not changed, after I do some changed on the observable, how can I set it back? just like refresh the page.

推荐答案

我认为刷新" viewModel是不好的做法.您可以像这样刷新它:

I think it is bad practice to "refresh" your viewModel. You could refresh it like this:

ko.cleanNode(document.getElementById("element-id"));
ko.applyBindings(yourViewModel, document.getElementById("element-id"));

但是我认为在视图模型上有一个名为重置"的方法会更干净，该方法会将您的观测值设置回初始状态.也许是这样的:

But I think it is cleaner to have a method on your view model called "reset", that sets your observables back to initial states. Maybe like this:

function MyViewModel() {
  this.something = ko.observable("default value");
  this.somethingElse = ko.observable(0):

  this.reset = function() {
    this.something("default value");
    this.somethingElse(0);
  }
}

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