JavaScript Operators
We use operators to perfor some actions on the operands. Operands can be variables, numeric literals, or string literals.
JavaScript Operators Syntax:
We can use the operators between two or more operands to perform a specific task.
// (numerical operator) const sum = 45 + 2; console.log(sum); // (bitwise operator) const value = 5 | 1; console.log(value); // (logical operator) const isRaining = true; console.log(isRaining); //(assignment opearator) const number = 5; console.log(number); // (relational operator) const isLess = 45 == 10; console.log(isLess);
Description of above code
- Numerical operators usually perform some numerical actions on the variable.
- Bitwise operators treat their operands as a set of 32-bit binary digits (zeros and ones) and perform actions.
- The logical operator returns true or false based on condition.
- We use assignment operators to assign values to the variable.
- Relational operators are for checking the relation between operands.
Note:
The complete detail of operators will be discussed later in the course.
Завдання
Swipe to start coding
Create three variables named firstItem
, secondItem
, and difference
. Assign the values 50
and 20
to firstItem
and secondItem
respectively. Find the difference and assign the value to the difference
variable and display it.
Рішення
Summary:
- The syntax is a set of rules which defines a program is true or not.
- JavaScript has two types of values: literals and variables.
- Literals cannot be can not change the code and we do not specify any keywords.
- Variables are used to store data. They are declared with name (which is not a keyword) and usually initialized with a value.
- Operators are used to perform some actions.
- JavaScript operators are used to perform special operations.
Все було зрозуміло?
Дякуємо за ваш відгук!