I am trying to call a function when the check box is checked and set the field values accordingly. The checkbox and the address fields are like below
<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>
I want the check box boolean value captured seperately as well as when check box is checked it needs to call the function. So in js I have like
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("");
}
}
But when the checkbox is checked/unchecked this function is not being called at all
I tried put the breakpoint but the function is not being it. New to this JS world, any help is greatly appreciated
Hey I made you a little snippet to show you that it works perfectly fine when using an observable and checked binding, when checkbox is checked, it is "true" if not it´s "false"
To make custom stuff like setting .val() of other input just use a computed function, it will be called whenever isChecked changes
var model = function () {
var self = this;
self.isChecked = ko.observable(false);
self.doStuffWhenChecked = ko.computed(function(){
if(self.isChecked()){
$('#textinput').val("whatever");
}else{
$('#textinput').val("");
}
},this);
}
var vm = new model();
ko.applyBindings(vm);
<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>
<label>Check this: </label>
<input type="checkbox" data-bind="checked: isChecked">
<span data-bind="visible: isChecked()"> Only show when checked </span>
<input type="text" id="textinput" >