Literal
Literals represent values in JavaScript. These are fixed values—not variables—that you literally provide in your script.
Examples
String literals
A string literal is zero or more characters enclosed in double ("
) or single quotation marks ('
). A string must be delimited by quotation marks of the same type (that is, either both single quotation marks, or both double quotation marks).
The following are examples of string literals:
js
"foo";
"bar";
"1234";
"one line \n new line";
"Joyo's cat";
Object literals
An object literal is a list of zero or more pairs of property names and associated values of an object, enclosed in curly braces ({}
).
The following is an example of an object literal. The first element of the car
object defines a property, myCar
, and assigns to it a new string, "Toyota
"; the second element, the getCar
property, is immediately assigned the result of invoking the function carTypes('Honda')
; the third element, the special
property, uses an existing variable (sales
).
js
const sales = "BMW";
function carTypes(name) {
return name === "Honda" ? name : `Sorry, we don't sell ${name}.`;
}
const car = {
myCar: "Toyota",
getCar: carTypes("Honda"),
special: sales,
};
console.log(car.myCar); // Toyota
console.log(car.getCar); // Honda
console.log(car.special); // BMW
See also
- Literal on Wikipedia