title: Manually Convert A Decimal String To A Number Using JavaScript
body: <p>I was asked this question in a job interview the other day.  And I thought "This will be easy I'll just use parseFloat()."  And then the interviewer said I was not allowed to use parseFloat().  That I had to manually make the conversion myself without using a function to do the casting for me. </p>
  
  <p>So if you know how to convert the decimal string "875.43", into a number in JavaScript without using parseFloat, please show me.  </p>
  
  <p>Thank you, 
  CM</p>