Exercise: Using clicks and arrays

Write the code for the function rainbowClick so that clicking repeatedly on the Z results in changes to the background colour using the colours in the array rainbow and the classesAn attribute used to refer to a group of elements. in the CSS file.

Note:

Hints:

  • Use getAttribute to determine the current class.

Solution to the exercise

Here is a possible solution to the exercise.

Note:

Hints:

  • undefined
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window.onload = startFunction;
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<!DOCTYPE html>
<html lang="en">
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td {
    background-color: yellow;
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