JavaScript.

Use the Console in the Developer Tools in the Chrome browser to create the"function myNumber(s)" that converts a string into the number. Please implement the conversion using some algorithm, instead of just call built-in function "Number" or other functions. I expect that the code will need to loop through the string element by element.

The following are the expected outputs in Console:

> myNumber('123.456')

123.456

> myNumber('1234567890')

1234567890

> myNumber('1')

1

> myNumber('abc')

NaN

> myNumber('.12345')

0.12345

> myNumber('12345.')

12345