Quiz

1. What is Operators?

• A: In JavaScript, an operator is a special symbol used to perform operations on operands (values and variables). For example,

  2 + 3; // 5
  

2. Different Types of JavaScript Operator?

• A:
  • Assignment Operators
  • Arithmetic Operators
  • Comparison Operators
  • Logical Operators
  • Bitwise Operators
  • String Operators
  • Other Operators

3. Use of Assignment Operators?

• A: Assignment operators are used to assign values to variables. For example,

  const x = 5;
  

4. Use of JavaScript Arithmetic Operators?

• A: Arithmetic operators are used to perform arithmetic calculations. For example,

  const number = 3 + 5; // output :- 8
  

5. Use of JavaScript Comparison Operators?

• A: Comparison operators compare two values and return a boolean value, either true or false. For example,

  const a = 5, b = 2;
  console.log(a>b); //True
  

6. Use of JavaScript Logical Operators?

• A: Logical operators perform logical operations and return a boolean value, either true or false. For example,

  const x = 5, y = 3;
  (x < 6) && (y < 5); // true
  

Here, && is the logical operator AND. Since both x < 6 and y < 5 are true, the result is true.

7. Use of JavaScript Bitwise Operators?

• A: Bitwise operators perform operations on binary representations of numbers. Bitwise operators are rarely used in everyday programming.

8. Use of JavaScript String Operators?

• A: In JavaScript, you can also use the + operator to concatenate (join) two or more strings.

  // concatenation operator
  console.log('hello' + 'world');
  
  let a = 'JavaScript';
  
  a += ' tutorial';  // a = a + ' tutorial';
  console.log(a);
  

9. which are the Other JavaScript Operators?

• A: other operators available in JavaScript.

  • , - Evaluates multiple operands and returns the value of the last operand. For example,

    let a = (1,3,4)  // output 4
    

  • ?: - Return Value Based on the condition. For example,

    (5, 3) 'success' : 'error' ; // Output: success
    

  • delete - Deletes an object Property, or an element of an array. for Example,

    delete x
    

  • typeof - Returns a string indicating the datatype. For example,

    typeof 3;  //Output "number"
    

  • Void - Discards the expression's return value. For example,

    Void(x)
    

  • in - returns true if the specified property in the object. For example,

    prop in object
    

  • instanceof - Returns true if the specified object is of the specified object type. For Example,

    object instanceof object_type