Knockout Js Passing Correct Parameter To Method

when using the click bind in knockout, how does knockout know to pass the correct parameter to the method its bound to?

Solution 1:

When calling your handler, Knockout will supply the current model value as the first parameter. This is particularly useful if you’re rendering some UI for each item in a collection, and you need to know which item’s UI was clicked.

from the documentation

There also is some discussion in the docs about how to pass more parameters by adding a wrapping function

<buttondata-bind="click: function(data, event) { 
    myFunction('param1', 'param2', data, event) 
}">
    Click me
</button>

Solution 2:

knockout understands which value to pass from context. it's the current model object. e.g if you're in a foreach knockout passes the current item.

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