JavaScript/Loop Programs/Program

Multiplication Table

Program to print multiplication table

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// Method 1: Using for loop
let number = 5;
console.log("Multiplication table of", number + ":");

for (let i = 1; i <= 10; i++) {
    console.log(number + " × " + i + " = " + (number * i));
}

// Method 2: Using template literals
let num = 7;
console.log("\nMultiplication table of " + num + ":");

for (let i = 1; i <= 10; i++) {
    console.log(`${num} × ${i} = ${num * i}`);
}

// Method 3: Using while loop
let n = 9;
let counter = 1;
console.log("\nMultiplication table of " + n + ":");

while (counter <= 10) {
    console.log(n + " × " + counter + " = " + (n * counter));
    counter++;
}

// Method 4: Function to generate table
function multiplicationTable(number, limit = 10) {
    console.log(`Multiplication table of ${number}:`);
    for (let i = 1; i <= limit; i++) {
        console.log(`${number} × ${i} = ${number * i}`);
    }
}

multiplicationTable(6);

Output

Multiplication table of 5:
5 × 1 = 5
5 × 2 = 10
5 × 3 = 15
5 × 4 = 20
5 × 5 = 25
5 × 6 = 30
5 × 7 = 35
5 × 8 = 40
5 × 9 = 45
5 × 10 = 50

Multiplication table of 7:
7 × 1 = 7
7 × 2 = 14
7 × 3 = 21
7 × 4 = 28
7 × 5 = 35
7 × 6 = 42
7 × 7 = 49
7 × 8 = 56
7 × 9 = 63
7 × 10 = 70

Multiplication table of 9:
9 × 1 = 9
9 × 2 = 18
9 × 3 = 27
9 × 4 = 36
9 × 5 = 45
9 × 6 = 54
9 × 7 = 63
9 × 8 = 72
9 × 9 = 81
9 × 10 = 90

Multiplication table of 6:
6 × 1 = 6
6 × 2 = 12
6 × 3 = 18
6 × 4 = 24
6 × 5 = 30
6 × 6 = 36
6 × 7 = 42
6 × 8 = 48
6 × 9 = 54
6 × 10 = 60

This program demonstrates different loop types to generate multiplication tables.

For Loop

Most common loop structure:

javascript
for (initialization; condition; increment) {
    // code to execute
}

Parts of For Loop:

  1. Initialization: let i = 1 - runs once at start

  2. Condition: i <= 10 - checked before each iteration

  3. Increment: i++ - runs after each iteration

While Loop

Executes while condition is true:

javascript
while (condition) {
    // code
    // update condition
}

Important: Must update counter inside loop to avoid infinite loop!

Template Literals

ES6 feature for string interpolation:

javascript
`${num} × ${i} = ${num * i}`

Benefits:

  • Cleaner than concatenation
  • Supports expressions
  • Multi-line strings

Function with Default Parameter

javascript
function multiplicationTable(number, limit = 10) {
    // limit defaults to 10 if not provided
}

Loop Control:

  • break: Exit loop immediately
  • continue: Skip to next iteration

When to Use:

  • For loop: Known iterations, counting

  • While loop: Unknown iterations, condition-based

  • Function: Reusable code

Next
Sum of n Natural Numbers