On Change event in select with knockout

Question

I have a problem how to call onchanges to press js on my choice, I already have a function and html, but when I select the select option, nothing changes

<select data-bind="event:{change:setSelectedStation() },
                   options: seedData,
                   optionsText: 'text',
                   optionsValue: 'value'">
</select>

here is my function

setSelectedStation: function(element, KioskId){
     this.getPopUp().closeModal();
     $('.selected-station').html(element);
     $('[name="popstation_detail"]').val(element);
     $('[name="popstation_address"]').val(KioskId);

     $('[name="popstation_text"]').val(element);
     // console.log($('[name="popstation_text"]').val());
     this.isSelectedStationVisible(true);
},

Answer 1

Use two-way data bindings for knockout instead of manually subscribing to user interface events.

Knockout valuedata binding listens for user interface changes and automatically tracks the latest value for you.

HTML jQuery- text, attr value .

(, ), subscribe .

var VM = function() {
  this.seedData = [
    { 
      text: "Item 1",
      data: "Some other stuff"
    },
    { 
      text: "Item 2",
      data: "Something else"
    },
    { 
      text: "Item 3",
      data: "Another thing"
    }
  ];
  
  this.selectedItem = ko.observable();
  
  this.selectedItem.subscribe(function(latest) {
    console.log("Input changed");
  }, this);
};

ko.applyBindings(new VM());

<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script>

<select data-bind="
        value: selectedItem,
        options: seedData,
        optionsText: 'text'">
</select>

<!-- ko with: selectedItem -->
<p>
  Your selection: <span data-bind="text: data"></span>
</p>
<!-- /ko -->

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