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JavaScript JavaScript Basics (Retired) Making Decisions with Conditional Statements Comparison Operators

Aakash Srivastav
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Aakash Srivastav
Full Stack JavaScript Techdegree Student 11,638 Points
Posted by Aakash Srivastav
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Aakash Srivastav
Full Stack JavaScript Techdegree Student 11,638 Points

String and Number

What does it mean "a letter string always come after the number string?" i,e if you compare a number and a letter , a number is less than a number.

2 Answers

Jason Anello
PLUS
Jason Anello
Courses Plus Student 94,610 Points
Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi Aakash,

It helps to understand this by looking at an ascii chart like this one: http://www.asciitable.com/

In that table you can see that the digits come before the letters in the alphabet. When you make string comparisons like that, it's comparing based off the order in that table. The character "1" has a lower decimal value than the character "a", for example.

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

That's not quite what was said.

The actual sentence is "If you compared a number and a letter, a number is less than a letter."

Example:

var numberstring = "123";
var letterstring = "abc";
if (numberstring < letterstring) {
  console.log("The letter string comes after the number string.");
}
Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

You understand alphabetical order, right? Where "a" comes before "f"?

Well, "5" comes before "a". That's all they are saying, numbers before letters.