Javascript Knockoutjs检查绑定函数调用问题

我试图在选中复选框并相应地设置字段值时调用函数。复选框和地址字段如下所示

<div class="form-check">
   <input class="form-check-input position-static" type="checkbox" id="SameAsShippingAddress" value="SameAsShippingAddress" data-bind="checked: sameAsShippingAddress" />
   <label>Check this box if Shipping Address and Billing Address are the same.</label>
 </div>
  
 <div class="row">
     <div class="col-md-6">
        <h4>Shipping Address:</h4>
           <div class="form-group required">
             <label for="EmailCompetitor" class="control-label">Email:</label>
             <input type="email" maxlength="150" id="EmailCompetitor" name="EmailCompetitor" class="form-control" data-bind="value: emailCompetitor" required />
            </div>

            <div class="form-group required">
              <label for="FirstNameCompetitor" class="control-label">First Name:</label>
              <input type="text" maxlength="150" id="FirstNameCompetitor" name="FirstNameCompetitor" class="form-control" data-bind="value: firstNameCompetitor" required />
            </div>
    </div>

    <div class="col-md-6">
       <h4>Billing Address:</h4>
       <div class="form-group required">
           <label for="EmailCompetitor_Billing" class="control-label">Email:</label>
           <input type="email" maxlength="150" id="EmailCompetitor_Billing" name="EmailCompetitor_Billing" class="form-control" data-bind="value: emailCompetitor_Billing" required />
        </div>

        <div class="form-group required">
           <label for="FirstNameCompetitor_Billing" class="control-label">First Name:</label>
           <input type="text" maxlength="150" id="FirstNameCompetitor_Billing" name="FirstNameCompetitor_Billing" class="form-control" data-bind="value: firstNameCompetitor_Billing" required />
        </div>
    </div>

但是，如果选中/取消选中复选框，则根本不会调用此函数

---

我尝试放置断点，但函数不在其上。对于这个JS世界来说，任何帮助都是非常感谢的

嘿，我给你做了一个小片段来告诉你，当使用一个可观察和选中的绑定时，它工作得非常好，当选中复选框时，它是“真”的，如果不是“假”

要自定义其他输入的setting.val（）之类的内容，只需使用一个计算函数，每当检查到更改时就会调用该函数

var模型=函数（）{
var self=这个；
self.isChecked=ko.可观察（假）；
self.doStuffWhenChecked=ko.computed（函数（）{
if（self.isChecked（））{
$（'#textinput'）.val（“任意”）；
}否则{
$（'#textinput'）.val（“”）；
}
}，这个）；
}
var vm=新模型（）；
ko.应用绑定（vm）

选中此项：
仅在选中时显示

var orderRequestFormViewModel = function () {
    var self = this;
    self.currentPage = ko.observable(1);
    self.referringPage = ko.observable();
     
    ...............
    self.sameAsShippingAddress = ko.observable().extend({ required: false });

    ..........
     self.sameAsShippingAddress = function () {
     if (this.checked) {
        $("#EmailCompetitor_Billing").val($("#EmailCompetitor").val());
        $("#FirstNameCompetitor_Billing").val($("#FirstNameCompetitor").val());
      } else {
        $("#EmailCompetitor_Billing").val("");
        $("#FirstNameCompetitor_Billing").val("");
    }
   }