Knockout JS Interview Questions and Answers

Ques 6. What is the purpose of the 'data-bind' attribute in Knockout JS?

The 'data-bind' attribute is used to associate HTML elements with Knockout JS data-bindings, enabling the establishment of a connection between the UI and the underlying view model.

Example:

; var viewModel = { message: 'Hello, Knockout!' }; ko.applyBindings(viewModel);

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Ques 7. Explain the 'visible' binding in Knockout JS.

The 'visible' binding is used to control the visibility of an HTML element based on the truthiness of the associated observable or expression.

Example:

Visible Content
; var viewModel = { showElement: ko.observable(true) };

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Ques 8. How can you handle click events in Knockout JS?

You can use the 'click' binding to associate a function with a click event on an HTML element.

Example:

Click me; var viewModel = { handleClick: function() { alert('Button clicked!'); } };

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Ques 9. What is the purpose of the 'text' binding in Knockout JS?

The 'text' binding is used to set the text content of an HTML element based on the value of the associated observable or expression.

Example:


; var viewModel = { message: 'Hello, Knockout!' };

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Ques 10. Explain the concept of 'template' binding in Knockout JS.

The 'template' binding is used to render content based on a template defined elsewhere in the HTML or within the view model.

Example:


; ; var viewModel = { person: { name: 'John' } };