Sass String

The string functions are used to manipulate and get information about strings.

Sass strings are 1-based. The first character in a string is at index 1, not 0.

The following table lists all string functions in Sass:

| Function | Description &amp; Example |
|--------------|-----------------------------|
| quote(string) | Adds quotes to string, and returns the result. **Example:** `quote(Hello world!)` Result: `"Hello world!"` |
| str-index(string, substring) | Returns the index of the first occurrence of the substring within `string`. **Example:** `str-index("Hello world!", "H")` Result: `1` |
| str-insert(string, insert, index) | Returns string with insert inserted at the specified index position. **Example:** `str-insert("Hello world!", " wonderful", 6)` Result: `"Hello wonderful world!"` |
| str-length(string) | Returns the length of string (in characters). **Example:** `str-length("Hello world!")` Result: `12` |
| str-slice(string, start, end) | Extracts characters from string; start at start and end at end, and returns the slice. **Example:** `str-slice("Hello world!", 2, 5)` Result: `"ello"` |
| to-lower-case(string) | Returns a copy of string converted to lower case. **Example:** `to-lower-case("Hello World!")` Result: `"hello world!"` |
| to-upper-case(string) | Returns a copy of string converted to upper case. **Example:** `to-upper-case("Hello World!")` Result: "HELLO WORLD!" |
| unique-id() | Returns a unique randomly generated unquoted string (guaranteed to be unique within the current sass session). **Example:** `unique-id()` Result: `tyghefnsv` |
| unquote(string) | Removes quotes around string (if any), and returns the result. **Example:** `unquote("Hello world!")` Result: `Hello world!` |