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Why is the 'this' keyword being passed as a second argument in a function? (knockoutJS)

 
Greenhorn
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I have this knockout.js code and want to know why the "this" keyword is being passed in the "fullName" function:



Thanks.
 
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Maintains scope, read the "Managing this" section http://knockoutjs.com/documentation/computedObservables.html
 
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