Katherine Fitzpatrick - Sprint-Challenge--JavaScript - #661
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Great job on this, everything looks really good!
Nice job on frequent commits!
| What is closure?<br> | ||
| It's a term used to describe when a function lives inside another function and can only be accessed through the function it's living in. Closure also requires the nested function is using only variables from the environment of the parent function. The practical and powerful part of closure is that even after the parent function runs and metaphorically dies, the closure (nested function + variables in environment) lives on, allowing the function and it's variables to maintain state.<br> | ||
| Describe the four rules of the 'this' keyword.<br> | ||
| 1. Window/Global Object Binding - if "this" is used while in global scope, it will bind to the window object;<br> |
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it's not about where this is used, it's about how the function with this inside it is called. If no other this binding rule applies, then it's window/default binding.
| It's a term used to describe when a function lives inside another function and can only be accessed through the function it's living in. Closure also requires the nested function is using only variables from the environment of the parent function. The practical and powerful part of closure is that even after the parent function runs and metaphorically dies, the closure (nested function + variables in environment) lives on, allowing the function and it's variables to maintain state.<br> | ||
| Describe the four rules of the 'this' keyword.<br> | ||
| 1. Window/Global Object Binding - if "this" is used while in global scope, it will bind to the window object;<br> | ||
| 2. Implicit Binding -used when referring to a property within an object, the word 'this' followed by'.' <br> |
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it is used when the function that contains the this binding is called from an object (e.g., person.talk() )
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