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ABC of JavaScript : A JavaScript Tutorial Arrays |
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It is almost impossible to teach about arrays in JavaScript without referring to the JavaScript Object Model. But I want to teach the Object Oriented stuff at the end of the tutorial.
Creating an array is simple...
numbers = new Array(3)
This will create a array called 'numbers' that can hold three elements. Now to fill it with numbers.
numbers[0] = 13
numbers[1] = 0
numbers[2] = 100
The first line is numbers[0]. Notice the 0? One thing to remember about arrays is that arrays start with 0 - not with 1. So the first element of an array is its 0'th item, second is 1'st item and so on.
Another way of creating the same array is given below...
numbers = new Array(13,0,100)
This will create the array and insert 3 elements - 13, 0 and 100. You can access any element of the array if you know its index. The below code will display the third item of the array - 100.
alert(number[2])
The same method can be used to edit the elements...
number[1] = 1
Now to see a full example on arrays.
Click on the Run button to see the result.
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