How many keywords in JavaScript
How Many Reserved Keywords Are There in JavaScript?
How many keywords in JavaScript
In JavaScript, there are certain reserved words known as keywords that have special meanings within the language. These keywords are used to define the syntax and structure of the code, and they cannot be used as variable names or function names. Examples of keywords in JavaScript include “if”, “else”, “function”, “for”, “while”, “return”, and “var”, among others. By using these keywords appropriately, developers can create logical and efficient code that performs specific tasks. Understanding and using JavaScript keywords effectively is essential for writing clear and concise code that is easier to maintain and debug.
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1 - JavaScript Keywords:
- var Used to declare variables in JavaScript.
- 2) function Defines a function in JavaScript.
- 3) if Conditional statement that executes a block of code if a condition is true.
- 4) else Used with ‘if’ statement to execute a block of code if the condition is false.
- 5) return Specifies the value to be returned by a function.
- 6) for Looping statement used to iterate over a block of code a specific number of times.
- 7) while Looping statement that repeats a block of code while a specified condition is true.
- 8) switch Used to perform different actions based on different conditions.
- 9) case A label used in switch statements to specify different cases.
- 10) break Exits a loop or a switch statement.
- 11) try Defines a block of code to be tested for errors.
- 12) catch Catches exceptions thrown by the try block.
- 13) finally Block of code that executes after try/catch, regardless of the result.
- 14) new Creates a new instance of a user defined object.
- 15) this Refers to the current object in JavaScript.
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