Although there are other types of assignment operators, which you can view here, this is by far the most common. Read about its use cases and history here.Īssignment is represented by the equals sign ( =).
It can still be used but is not best practice. To create a variable that you intend to update, use let:īefore 2015, the var keyword was used primarily to define both of the above types. This is useful for values in your application that would cause issues if changed unintentionally: const continent = "Europe" To create a ‘constant’ variable, one that cannot be reassigned or changed, use the constkeyword. In this example, I’ll assign the string "Europe" to the variable continent. Assignment OperatorsĪssignment operators, in their most basic form, apply data to a variable. There are several types of operators in JavaScript, and in this lesson we’ll learn about the most common ones: assignment operators, arithmetic operators, comparison operators, and logical operators. JavaScript operators are symbols that are used to perform different operations on data. They are essential for developers to write programs that can make decisions, perform actions, and manipulate data.
Together, these elements provide the foundation for creating complex logic, algorithms, and systems. Functions can also accept inputs and return outputs, allowing for more dynamic and flexible code. Functions: Encapsulate a set of statements to be used multiple times, making code more organized and reusable.For example, an if statement can be used to execute a block of code only if a certain condition is met. Conditional statements: Control the flow of a program based on certain conditions.that it is larger than one number and smaller the other. For example, using the AND operator (&) to see if a variable is between two values, i.e. Logical Operators: Used to connect two or more comparison operators and return a boolean value.Comparison Operators: Compare two or more values and return a boolean value (true or false) For example, using the greater than (>) operator to check if an integer variable is larger than another.
For example, the addition operator (+) can be used to add two numbers together.
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