Question

这是我的代码

<div data-bind="foreach: baselist">
<div>
    <span data-bind="text: basename"></span>
    <div data-bind="foreach: subItems">
       <span data-bind="text: subitemname"></span>
         <a href="#" data-bind="click: $parent.removecard">Del</a>
    </div>     
</div>
 <button data-bind="click:addChild">Add</button>

这是我的viewmodel

    var SimpleListModel2 = function(baselist) {

     this.baselist= ko.observableArray(baselist);
     this.addChild = function(list) {
       alert(list.basename());
    }.bind(this);

    self.removecard = function (cardlist) {
                this.cardlists.remove(cardlist);
     };
};

这是我传递给viewmodel的数据。如何在此数据中包含基本列表？它无法找到基本列表

var initialData = [{
    { basename: "Danny", subItems: [
        { subitemname: "Mobile"},
        { subitemname: "Home"}]
    },
    { basename: "Sensei", subItems: [
        { subitemname: "Mobile"},
        { subitemname: "Home"}]
    }];

Answer 1

从你提供的html中，我可以看到结构是这样的。

baselist - ＆gt; {（baseName），（subItems - ＆gt; subitemName）}

因此，您似乎只需要在初始化期间将数据传递给viewModel。并在此处删除括号alert(list.basename);，因为这不是可观察对象。

＆＃13;

var SimpleListModel2 = function(baselist) {
  this.baselist = ko.observableArray(baselist);
  this.addChild = function(list) {
    alert(list.basename);
  }.bind(this);
};

var initialData = [
{ basename: "Danny", subItems: [
  { subitemname: "Mobile"},
  { subitemname: "Home"}]
},
{ basename: "Sensei", subItems: [
  { subitemname: "Mobile"},
  { subitemname: "Home"}]
}]; 

ko.applyBindings(new SimpleListModel2(initialData));

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>

<div data-bind="foreach: baselist">
  <div>
    <span data-bind="text: basename"></span>
    <div data-bind="foreach: subItems">
      <span data-bind="text: subitemname"></span>
    </div>     
  </div>
  <button data-bind="click:$parent.addChild">Add</button>
</div>

＆＃13;

knockout.js可观察数组绑定

1 个答案: