Javascript Fundamentals
This series of challenges covers the very fundamentals of Javascript.
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Sum two numbers

Comparison operators, strict equality

Get type of value

Get nth character of string

Remove first n characters of string

Get last n characters of string

Get first n characters of string

Find the position of one string in another

Extract first half of string

Remove last n characters of string

Return the percentage of a number

Basic JavaScript math operators

Check whether a string contains another string and concatenate

Check if a number is even

How many times does a character occur?

Check if a number is a whole number

Multiplication, division, and comparison operators

Round a number to 2 decimal places

Split a number into its digits

Clear up the chaos behind these strings

Return the next higher prime number

Find next higher natural number that is divisble by y

Insert character after every n characters (backwards)

Find the correct word by incrementing letters in alphabet