1. What We Want To Do User enters: Mary Smith
We want to respond: Hi Mary!
We know how to concatenate.
How do we take part of a string?

2. Think of Scrabble tiles Each tile is a
Strings
Think of Scrabble tiles
Each tile is a
Letter
Number
Punctuation mark
Space (blank)

3. A literal string must be inside double quotes or single quotes
What is a String?
A literal string must be inside double quotes or single quotes
“this is a string” and this is not a string.
Remember not to cut and paste

4. Concatenating (formally)
It means combining two or more things into one thing
+ Anything can be concatenated
“awe” + “some” = “awesome”
Whitespace only matters inside quotes
“a”+“b” same as “a” = “b”
“a ” + “b” NOT the same as “a” + “b”

5. Substring A substring is also a String
A substring is a part of another string
“cake” is a substring of “birthday cake”
so are “day”, “thd”, and “y cake”
“they” is not, neither is “hello” or “dude”
Will come back to how to extract substrings

6. Referencing characters
Each character has a position Note that it starts at 0, not 1 H I M O 1 2 3 4 5

7. JavaScripts Strings Length: stringname.length
Functions: stringname.function()
Concatenation: + or stringname.concat()
Lots more functions
Use of negative index to come from end
Built-in regular expressions
Excellent summary

8. Useful Functions charAt() Character at the position indexOf()
Position of the first found occurrence
lastIndexOf()
Position of the last found occurrence
replace()
Replaces the matched substring with a new substring
search()
Position of the match
substr()
Substring from start position for number of chars
substring()
Substring from position 1 to position 2
toLowerCase()
Converts a string to lowercase letters
toUpperCase()
Converts a string to uppercase letters
trim()
Removes whitespace from both ends of a string