The length property in arrays and the index-value pair (i, arr[i])

Can someone help me understand this code snippet?


function listArrayItems(arr) {
    for (var i = 0; i < arr.length; i++) {
        console.log(i, arr[i])
    }
}
var colors = ['red', 'orange', 'yellow', 'green', 'blue', 'purple', 'pink'];
listArrayItems(colors);

I've been trying to figure out the .length property but I'm still confused. According to my research, it returns the number of characters in a string, and if the string is empty then the length will be 0. Also, can someone explain what console.log(i, arr[i]) is doing here? Any help would be greatly appreciated!***

javascriptarraysfunctionfor-loop

Answer №1

Indeed, it is quite straightforward,

console.log(i, arr[i]) simply means that in this context, "i" represents the current index within the loop, and "arr[i]" indicates the value at that particular index during iterations.

Upon viewing the output, you will observe the following:

i arr[i]
==========
0 'red'
1 'orange'
2 'yellow'
3 'green'
4 'blue'
5 'purple'
6 'pink'

I trust this explanation has provided a clear understanding of the concept.

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