Week6 Homework #4
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| //10.I’ve declared a multidimensional array (an array inside an array) -- see below. How can I access the third item’s second element? i.e. [2, 1] is the third element, and I want to access 1. Add a console.log statement accessing this item. | ||
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| const grid= [[0,1], [1,1], [2,1], [3,1]]; | ||
| const item= grid[2,2]; |
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We didn't cover this in class, but when working with nested arrays (arrays inside arrays), you need to use two sets of square brackets to access the element like grid[2][1].
For example, if you use grid[2], you get the second element of the grid array [2, 1]. So if you use grid[2][1], you get the second element of grid[2], which is 1.
grid[2]; // this is [2, 1]
grid[2][1]; // this is 1I see why you'd use a comma like in [2, 2]! But that actually prints out [2, 1] instead of 1. I didn't understand why until I realized the comma operator returns the last value, so grid[2,2] becomes [2] (explanation)
| console.log('The array has no value becauswe its empty'); | ||
| console.log(list); | ||
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| const favouritanimal = ['Cat','Dog','Birds','elephant']; |
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I think the instructions said to use a plural name for your array since it contains a list of items, so a better name would be favouriteAnimals
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| //6- Arrays// | ||
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| const list = ['','','']; |
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The array here isn't empty - it does have values even though they're empty strings.
An empty array would be const list = [];
| //8.If x equals 7, and the only other statement is x = x % 3, what would be the new value of x? | ||
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| var x=7; | ||
| x = x%7; |
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I'm a little confused about what you're testing in this question! note that this should be x = x % 3, not x = x % 7
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| //12.12. Here’s a profile about a cat for adoption. Create variables to hold information about this cat as shown on the profile. For example: | ||
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| const namee = 'Prince'; |
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I know you declared name and age above so you can't redeclare them again, but I think catName and catAge would be better names to use in this case
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