String Methods
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Does toUpperCase() return a new string in all caps?
2. Does toLowerCase() change the original string?
3. Does trim() remove whitespace from the start and end?
4. Is 'touppercase' with no capitals valid JavaScript syntax?
5. Do these string methods need parentheses to be called?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1name.toUpperCase() | Ainput.trim() | |
| 2name.trim() | Btext.toLowerCase() | |
| 3Converts every letter of a string to lowercase | CReturns name in all uppercase letters | |
| 4Removes leading and trailing whitespace from a string | DReturns name with whitespace removed from both ends | |
| 5text.touppercase() | EWrong - method names are camelCase: toUpperCase | |
| 6text.Trim() | FWrong - 'trim' must start with a lowercase t |
C
Definitions
toUpperCase()
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
console.log(name.___________());
2.
console.log(name.___________());
3.
console.log(name.____());
4.
let upper = word.___________();
5.
let trimmed = input.____();
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
let a = " hi ";
B
console.log(a.Trim());
C
console.log(a);
Question 2
A
let b = "Hi";
B
console.log(b.touppercase());
C
console.log(b);
Question 3
A
let f = "Hi";
B
console.log(f);
C
console.log(f.toUpperCase);
Question 4
A
console.log(g.trim);
B
let g = " hi ";
C
console.log(g);
Question 5
A
let h = "Hi";
B
console.log(h.toUpperCase());
C
console.log(h);
D
console.log(h.touppercase());
Answer Key
String Methods
Section A: Quick Questions
Q1
A — Yes
Q2
A — No
Q3
A — Yes
Q4
B — No
Q5
B — Yes
Section B: Match the Pairs
Q1
name.toUpperCase() → Returns name in all uppercase letters
Q2
name.trim() → Returns name with whitespace removed from both ends
Q3
Converts every letter of a string to lowercase → text.toLowerCase()
Q4
Removes leading and trailing whitespace from a string → input.trim()
Q5
text.touppercase() → Wrong - method names are camelCase: toUpperCase
Q6
text.Trim() → Wrong - 'trim' must start with a lowercase t
Section C: Definitions
Q1
toUpperCase() — Returns a new string with all letters converted to uppercase.Section D: Fill in the Blanks
Q1
console.log(name.toUpperCase());Q2
console.log(name.toLowerCase());Q3
console.log(name.trim());Q4
let upper = word.toUpperCase();Q5
let trimmed = input.trim();Section E: Spot the Error
Q1
B — 'trim' must be lowercase - a capital T causes an error.
Q2
B — Method names are camelCase - it should be toUpperCase, not touppercase.
Q3
C — Missing parentheses - toUpperCase() needs to be called.
Q4
A — Missing parentheses - trim() needs to be called.
Q5
D — Method names are camelCase - it should be toUpperCase, not touppercase.