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Learning JavaScript Data Structures and Algorithms

You're reading from   Learning JavaScript Data Structures and Algorithms JavaScript Data Structures and algorithms can help you solve complex development problems – learn how by exploring a huge range of JavaScript data types

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Product type Paperback
Published in Oct 2014
Publisher Packt
ISBN-13 9781783554874
Length 218 pages
Edition 1st Edition
Languages
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Author (1):
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Loiane Avancini Loiane Avancini
Author Profile Icon Loiane Avancini
Loiane Avancini
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Toc

Why should we use arrays?

Let's consider that we need to store the average temperature of each month of the year of the city that we live in. We could use something like the following to store this information:

var averageTempJan = 31.9;
var averageTempFeb = 35.3;
var averageTempMar = 42.4;
var averageTempApr = 52;
var averageTempMay = 60.8;

However, this is not the best approach. If we store the temperature for only 1 year, we could manage 12 variables. However, what if we need to store the average temperature for more than 1 year? Fortunately, that is why arrays were created, and we can easily represent the same information mentioned earlier as follows:

averageTemp[0] = 31.9;
averageTemp[1] = 35.3;
averageTemp[2] = 42.4;
averageTemp[3] = 52;
averageTemp[4] = 60.8;

We can also represent the averageTemp array graphically:

Why should we use arrays?
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