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Binding a Textbox in KNockout


Binding a Textbox in KNockout

By : lunar_bender
Date : November 22 2020, 10:54 AM
it helps some times How do you expect this code to work?
You need to make your provider object observable when your pageload,
code :
 var Provider = 
                    {
                        ProviderType: ko.observable(""),
                        FirstName: ko.observable(""),
                        Lastname: ko.observable(""),
                        Certification: ko.observable(""),
                        Specialization: ko.observable(""),
                        SSN: ko.observable(""),
                        ContactNumber: ko.observable(""),
                        ContactEmail: ko.observable(""),
                        FacilityName : ko.observable("")
                    }

                    ko.applyBindings(Provider);


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Knockout.js Textbox Value Binding Auto-Complete

Knockout.js Textbox Value Binding Auto-Complete


By : Thiago Queiroz
Date : March 29 2020, 07:55 AM
To fix this issue This issue was submitted as a bug 1 year ago:
https://github.com/SteveSanderson/knockout/pull/122
Knockout select and textbox sharing binding

Knockout select and textbox sharing binding


By : Mahmoud Kharsa
Date : March 29 2020, 07:55 AM
hope this fix your issue As you can see I add an inputValue observable that is bound to the text input. I also add an computed named virtualSet that contains both original items and the new item (from the text input). I susbcribe to the inputValue so the select will be automatically set when you are typing.
code :
var viewModel = {    
    inputValue: ko.observable('1'),
    Value: ko.observable('1'),
    Set: ['1', '2', '3']    
};
viewModel.virtualSet = ko.computed({
    read: function () {
        var vs = this.Set.slice(0);
        if (this.inputValue() && this.inputValue().length)
             vs.unshift(this.inputValue());
        return vs;
    },
    owner: viewModel
});
viewModel.inputValue.subscribe(function (value) {
    viewModel.Value(value);
});
Update Value In textbox using Knockout + Typeahead Custom Binding

Update Value In textbox using Knockout + Typeahead Custom Binding


By : Kirkua
Date : March 29 2020, 07:55 AM
help you fix your problem There are certain limitations with the temporary workout like knockout extension for Bootstrap Typeahead. I used it before in my project but it lead to a lot of limitations like custom control over templating, custom control over selected object property and selected object value. So I moved on to plugin jqAuto which is based on JQuery-UI autocomplete.
This plugin has enormous range of customizations and is faster than typeahead. I replicated your code in the jqAuto code and it is faster and cleaner than bootstrap typeahead.
code :
var ViewModel = function() {    
    self.categories = [
           { name: 'Fruit', items: 'abc' },
            { name: 'Vegetables', items: 'xyz' }
        ];

    self.data = ko.observable("");
    self.item = ko.observable();

};

ko.applyBindings(new ViewModel());
<input data-bind="jqAuto: { source: categories, value: data, dataValue : data, inputProp: 'name', valueProp: 'name', labelProp: 'name'  }" />  
Bind datepicker on dynamic textbox with knockout js binding

Bind datepicker on dynamic textbox with knockout js binding


By : Anna Simpson
Date : March 29 2020, 07:55 AM
this will help You can create a custom ko binding for the datepicker which will be called when the control is databound.
e.g.
code :
ko.bindingHandlers.datePicker = {
  init: function(element, valueAccessor) {
    var $element = $(element);
    $element
      .datepicker({
        autoclose: true,
        format: 'mm/dd/yyyy'
      });
  },
  update: function(element, valueAccessor) {
    var value = ko.utils.unwrapObservable(valueAccessor());
    var $element = $(element);
    $element.datepicker("setDate", value);
  }
};

function TransactionVM(vm) {
  var self = this;
  self.TransactionList = ko.observableArray([]);

  self.loadList = function(transactions) {
    self.TransactionList([]);
    transactions.forEach(function(transaction) {
      self.TransactionList.push(transaction);
    });
  };
}

var vm = new TransactionVM();
ko.applyBindings(vm);

var iteration = 1;
function addData() {
  var transactions = [];
  for (var i = 0; i < 10; i++) {
    transactions.push({
      TransactionDate: new Date(),
      column2: "testing round " + iteration + " item " + i
    });
  }
  vm.loadList(transactions);
  iteration++;
}

$("#add").click(addData);
<link href="https://code.jquery.com/ui/1.12.0/themes/smoothness/jquery-ui.css" rel="stylesheet" />
<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/3.4.2/knockout-min.js"></script>
<script src="https://code.jquery.com/ui/1.12.0/jquery-ui.min.js"></script>

<table id="idTblTranItems" class="table table-striped table-bordered table-hover table-green dataTable" aria-describedby="dtAllClients_info">
  <thead>
    <tr class="btn-primary">
      <th style="text-align:center">Date<br /> (MM/dd/YYYY)</th>
      <th style="text-align:center">Column2</th>
    </tr>
  </thead>
  <tbody data-bind="foreach: TransactionList" id="tbodyTransactionsNew">
    <tr>
      <td>
        <input class="form-control TransactionDate" type="text" data-bind="datePicker: TransactionDate" />
      </td>
      <td>
        <input type="text" class="form-control" data-bind="value: column2" />
      </td>
    </tr>
</table>
<button id="add">Add</button>
Knockout JS: Get Textbox data from Table under for-each binding

Knockout JS: Get Textbox data from Table under for-each binding


By : EREN DENIZ SANLIER
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Your input fields didn't map to your value data.
My code differs in some points of yours. To ensure, that self.columnNames does not have more columns than ValuesData I created a static object ValuesData.columns which contains all relevant column definitions. The observables for the single columns are created dynamically as soon as you click on addRow.
code :
(function() {
  var ViewModel = function() {
    var self = this;
    self.valuesData = ko.observableArray();

    self.columns = ko.computed(function() {
      if (self.valuesData().length === 0)
        return [];

      return ValuesData.columns;
    });


    self.addRow = function() {
      self.valuesData.push(new ValuesData());
    };

    self.Save = function() {
      alert('Data:')
    };

    self.removeRow = function(data) {
      self.valuesData.remove(data);
    };
  }

  // Dynamic values.
  var ValuesData = function(siid, comment) {
    var self = this;

    // Add observables dynamically for all relevant columns.
    for (var i = 0; i < ValuesData.columns.length; i++) {
      var column = ValuesData.columns[i];
      self[column.Property] = ko.observable(column.InitialValue)
    }
  };

  // Basic column definition.
  ValuesData.columns = [{
      Caption: 'SIID',
      Property: 'SIID',
      InitialValue: undefined
    },
    {
      Caption: 'Column 1',
      Property: 'Col1',
      InitialValue: undefined
    },
    {
      Caption: 'Column 2',
      Property: 'Col2',
      InitialValue: 'banana'
    },
    {
      Caption: 'Comment',
      Property: 'Comment',
      InitialValue: undefined
    }
  ]

  vm = new ViewModel()
  ko.applyBindings(vm);

  // add initial row.
  vm.addRow();


})();
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script>
<br><br>
<table>
  <thead>
    <!-- NEW: use ko foreach with 'as' to have an alias for accessing $data. -->
    <tr data-bind="foreach: { data: columns, as: 'column'}">
      <th> <span data-bind="text: column.Caption"></span>
      </th>
    </tr>
  </thead>
  <tbody data-bind="foreach: { data: valuesData, as: 'rowData'}">
    <tr data-bind="foreach: { data: $parent.columns, as: 'column' }">
      <!-- NEW: bind to the corresponding property/observable in ValuesData -->
      <td><input type="text" class="form-control textbox" data-bind="textInput: rowData[column.Property]" /> </td>
    </tr>
    <tr>
      <td>
        <input type="button" value="Remove Row" data-bind="click: $parent.removeRow" class="btn btn-danger" />
      </td>
    </tr>
  </tbody>
</table>

<br><br>
<div class="col-xs-12 col-sm-6">
  <input type="button" value="Add Row" class="btn btn-primary" data-bind="click: addRow" />
  <input type="button" value="Save" class="btn btn-primary" data-bind="click: Save" />
</div>
<pre data-bind="text: ko.toJSON(valuesData, null, 2)"></pre>
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