Keywords detector ⅠⅠ

Given a string and a keyword, return the keyword and its index as shown in the examples.

Sample Code:

function wordFinder(strs,str) {
// Enter your logic here...
}

Examples:

Input: 'What did the ocean say to the beach','beach'
Output: 'beach found at index 7.'
Explanation: The element 'beach' has an index value of 7.

Input: 'Nothing, it just waved','🐳'
Output: '🐳 not found.'
Explanation: The element '🐳' was not found in the input string.

Test Case	Input	Expected Output
Test Case 1	'What did the ocean say to the beach','beach'	'beach found at index 7.'
Test Case 2	'Nothing, it just waved','🐳'	'🐳 not found.'

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