Contents
What to do with custom elements in knockout?
Custom elements are an optional but convenient syntax for consuming components. Instead of needing placeholder s into which components are injected with bindings, you can use more self-descriptive markup with custom element names (e.g., or ).
How to call a function in Knockout.js?
With most MV* browser-side frameworks – including Knockout – a common pattern is for the “insert” api call to return the ID of the new element (or however much data you need to return) and simply update the client-side version of that model with the new ID. Knockout will automatically update your UI provided that the ID property is an observable.
When to use the ” template ” context in knockout?
This will cause the data to be re-rendered using the appropriate template. If your function accepts a second parameter, then it will receive the entire binding context. You can then access $parent or any other binding context variable when dynamically choosing a template. For example, you could amend the preceding code snippet as follows:
What should the tag names be in knockout?
By default, Knockout assumes that your custom element tag names correspond exactly to the names of components registered using ko.components.register. This convention-over-configuration strategy is ideal for most applications.
When do you unregister a component in knockout?
Of course, you don’t have to worry about releasing any event handlers created by standard Knockout bindings in your view, as KO automatically unregisters them when the elements are removed. console.log (‘Another second passed, and the component is still alive.’);
Do you need a placeholder for a component in knockout?
Instead of needing placeholder s into which components are injected with bindings, you can use more self-descriptive markup with custom element names (e.g., or ). Knockout takes care to ensure compatibility even with old browsers such as IE 6.
What does knockout call in createviewmodel function?
If the viewmodel is given as a constructor function, this means Knockout calls new YourViewModel (params). If the viewmodel is given as a createViewModel factory function, Knockout calls createViewModel (params, componentInfo), where componentInfo.element is the element into which the not-yet-bound template has already been injected.