You can call methods on strings, just like you can with numbers:
> "supercalifragilisticexpialidocious".toUpperCase(); "SUPERCALIFRAGILISTICEXPIALIDOCIOUS"
Or even call the method on a variable assigned to a string:
> var word = "foo"; undefined > word.concat("bar"); "foobar"
Methods can be chained like this:
> "foo".concat("bar").toUpperCase(); "FOOBAR"
concat() method (which concatenates, or combines, two strings) returns a string, which then has
toUpperCase() called on it. Then,
toUpperCase() returns the final result.
By the way, here's a nice shortcut for the
> "I love" + " " + "Epicodus"; "I love Epicodus"
Or with variables:
> var sentiment = "I love "; undefined > var animal1 = "cats"; undefined > var animal2 = "dogs"; undefined > sentiment + animal1; "I love cats" > sentiment + animal2; "I love dogs"
Back to arguments. String methods can take numbers as arguments, too:
> "caterpillar".charAt(5); "p"
Chaining methods: Calling a method directly on the return value of another method.
Concatenation: Combining two Strings together into one String.
A few useful string methods:
charAt();- Returns the character at a particular location in a String.
toUpperCase();- Converts a String to uppercase.
toLowerCase();- Converts a String to lowercase.
concat();- Combines two strings.
You can call methods on strings, or variables assigned to strings:
"supercalifragilisticexpialidocious".toUpperCase(); var word = "foo"; word.concat("bar");
Methods can be chained (for strings, numbers, or anything else):
You can combine strings with
+ instead of
concat(). This is still known as concatenation despite not using the
"I love" + " " + "Epicodus";