JavaScript_Succinctly

Sample: sample141.html
var myArray = [[[['4th dimension']]]];
console.log(myArray[0][0][0][0]); // Logs '4th dimension'.
This code example is rather silly, but you get the idea that arrays can contain other
arrays and you can access encapsulated arrays indefinitely.
Looping over an array, backwards and forwards
The simplest and arguably the fastest way to loop over an array is to use the while
loop.
In the following code, we loop from the beginning of the index to the end.
Sample: sample142.html
var myArray = ['blue', 'green', 'orange', 'red'];
var myArrayLength = myArray.length; // Cache array length to avoid
unnecessary lookup.
var counter = 0; // Set up counter.
while (counter < myArrayLength) { // Run if counter is less than array
length.
console.log(myArray[counter]); // Logs 'blue', 'green', 'orange',
'red'.
counter++; // Add 1 to the counter.
}
And now we loop from the end of the index to the beginning.
Sample: sample143.html
var myArray = ['blue', 'green', 'orange', 'red'];
var myArrayLength = myArray.length;
137