Lajawanti-Dhake - #683
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mmargo10
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Sep 14, 2018
| 2) What is the difference between a function and a method? | ||
| --> In programming, function is a named section of a program that performs a specific task. In javascript you can define function | ||
| anywhere in your program because of HOISITNG. | ||
| A function defined inside of an object is known as method. |
| --> .forEach() works similar as for loop, using .forEach() you can iterate through every element in the array, .forEach() method doesn’t | ||
| return anything. | ||
| .map() method will also call a provided function on every element in the array. The difference is that map() utilizes return values | ||
| and actually returns a new Array of the same size. |
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| 3) What is closure? | ||
| --> A closure is an inner function that has access to the outer (enclosing) function's variables—scope chain. The closure has three | ||
| scope chains: it has access to its own scope (variables defined between its curly brackets), it has access to the outer function's variables, and it has access to the global variables. |
| We call these explicit because you are explicitly passing in a this context to call() or apply(). | ||
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| new Binding : whenever we’ve got a function invoked with the new operator, the this keyword here is bound to the new object being | ||
| built by the function constructor. |
| const cube = new CubeMaker(5); | ||
| console.log(cube); | ||
| console.log(cube.volume()); // 125 | ||
| console.log(cube.surfaceArea()); // 150 No newline at end of file |
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Well done. You completed each task correctly.
| 'roar' : function() { | ||
| return "RAWERSRARARWERSARARARRRR!"; | ||
| } | ||
| }; |
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I would suggest that in future you use const or let instead of var.
| 'period' : 'Late Cretaceious' | ||
| }; | ||
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| // Using your dinosaur objects, log answers to these questions: |
| Once you have the new array created, sort the universities alphabetically and log the result. */ | ||
| const universities = []; | ||
| console.log(universities) | ||
| const universities = graduates.map(function(element) { |
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Your answer is a correct use of .map, however you were instructed to NOT use any array methods. A for loop would have been the correct answer.
| const populationTotal = zooAnimals.reduce(function(total, animalPopulation) { | ||
| return total + animalPopulation.population; | ||
| },0); | ||
| console.log(populationTotal) No newline at end of file |
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The answers to the zoo animals questions are correct.
| this.length = length; | ||
| this.width = width; | ||
| this.height = height; | ||
| } |
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@mmargo10 "Sprint-challenge-Javascript"