How to properly clear another field on checkbox click in knockout.js?

by darrion.kuhn , in category: Javascript , 14 days ago

How to properly clear another field on checkbox click in knockout.js?

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1 answer

Member

by deron , 13 days ago

@darrion.kuhn 

To properly clear another field when a checkbox is clicked in Knockout.js, you can use Knockout's computed observables and subscribe to changes in the checkbox field. Here is an example implementation:


HTML:

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<label>
    <input type="checkbox" data-bind="checked: clearField">Clear Field</input>
</label>
<input type="text" data-bind="value: fieldToClear">


JavaScript:

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var viewModel = {
    clearField: ko.observable(false),
    fieldToClear: ko.observable(''),

    clearField.subscribe(function(newValue) {
        if(newValue) {
            viewModel.fieldToClear('');
        }
    });
};

ko.applyBindings(viewModel);


In this example, we have a checkbox bound to the clearField observable. We then subscribe to changes in the clearField observable and clear the fieldToClear value when the checkbox is clicked. This ensures that the fieldToClear is properly cleared when the checkbox is checked.