Answer the following true & false questions: In order to reference an image usin

Question

Answer the following true & false questions:

In order to reference an image using the images[ ] array, you must first create the array in your program.

True

False

A single JavaScript array can store values of different data types; for example the array named customer could store a customer’s address (a string) and their age (an integer).

True

False

You can create an array in JavaScript without specifying a size.

True

False

If you are writing JavaScript that must be compatible with older browsers; avoid using the while loop, since older browsers may not support it.

True

False

Your program will run faster, if it doesn’t have to create new array elements at runtime.

True

False

Explanation / Answer

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1 - False

It is not necessary to create image[] array, you can also store array by using

var array={"Image1","Image2"}; or you can create Image[] array but its not necessary;

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2- True

Javascript array can hold a different variable because the array can be use as object and tha object hold any datatype and that variable is access by its index number

var array=["John","Deo", 25];

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3 - True

We can create array without specifying a size. we declare a array like this

var array = [10,30,40];

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4- False

Older browser and modern browser support while loop and the code which is not support by older broswer e should be avoided

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5- True

Our program will run faster if it doesn't have to create new array element at runtime because at runtime we adding a new element , and this is a dynamic memory allocation at runtime so it take a time to add new element and allocate a memory into heap

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