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add reduce map filter #72

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add reduce map filter #72

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18 changes: 18 additions & 0 deletions Week2/homework/index.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
<!DOCTYPE html>
<html>

<head>
<title>week2JS</title>
<meta charset="utf-8" />


</head>

<body>


<script type="text/javascript" src="maartjes_work.js"></script>
<script type="text/javascript" src="map_filter.js"></script>
</body>

</html>
90 changes: 50 additions & 40 deletions Week2/homework/maartjes_work.js
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Original file line number Diff line number Diff line change
@@ -1,47 +1,57 @@
'use strict';

const monday = [
{
name: 'Write a summary HTML/CSS',
duration: 180
},
{
name: 'Some web development',
duration: 120
},
{
name: 'Fix homework for class10',
duration: 20
},
{
name: 'Talk to a lot of people',
duration: 200
}
const monday = [{
name: 'Write a summary HTML/CSS',
duration: 180
},
{
name: 'Some web development',
duration: 120
},
{
name: 'Fix homework for class10',
duration: 20
},
{
name: 'Talk to a lot of people',
duration: 200
}
];

const tuesday = [
{
name: 'Keep writing summary',
duration: 240
},
{
name: 'Some more web development',
duration: 180
},
{
name: 'Staring out the window',
duration: 10
},
{
name: 'Talk to a lot of people',
duration: 200
},
{
name: 'Look at application assignments new students',
duration: 40
}
const tuesday = [{
name: 'Keep writing summary',
duration: 240
},
{
name: 'Some more web development',
duration: 180
},
{
name: 'Staring out the window',
duration: 10
},
{
name: 'Talk to a lot of people',
duration: 200
},
{
name: 'Look at application assignments new students',
duration: 40
}
];

const tasks = monday.concat(tuesday);
const tasks = monday.concat(tuesday)
let minutesToHours = tasks.filter(a => a.duration >= 120).map(h => h.duration / 60);
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You mixed up the order of first 2 steps here. While that does not matter much in this case, you should read the instructions carefully.


// Add your code here
console.log(minutesToHours);

let perHour = minutesToHours.map(v => v * 23) // per hour 23 euro
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You should always have meaningful names for the variables, 'v' is not an intuitive name.


console.log(perHour);

let total = perHour.reduce(function(a, b) {
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You should have used '=>' function here instead of 'function()', that's what the assignment mentioned.

return a + b;

});
total = total.toFixed(2); //rounding number
console.log("Maartje totally will earn: " + total + " Euro");
5 changes: 4 additions & 1 deletion Week2/homework/map_filter.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,4 +2,7 @@

const numbers = [1, 2, 3, 4];

// Add your code here

const newNumbers = numbers.filter(w => w % 2 !== 0).map(x => x * 2);
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Another example of non-intuitive naming :)


console.log('The doubled numbers are: ' + newNumbers);