Hollow Square Pattern in JavaScript | Stackblitz

Pattern 

*****
*   *
*   *
*   *
*****

DEMO CODE

let n = 5; // row or column count
// defining an empty string
let string = "";
for(let i = 0; i < n; i++) { // external loop
  for(let j = 0; j < n; j++) { // internal loop
    if(i === 0 || i === n - 1) {
      string += "*";
    }
    else {
      if(j === 0 || j === n - 1) {
        string += " * ";
      }
      else {
        string +=  ' '; 
      }
    }
  }
  // newline after each row
  string += "\n";
}
// printing the string
console.log(string);





 

Square Star Pattern in Javascript Demo | Stackblitz

CODE:

// Import stylesheets

let n = 5; // row or column count

// defining an empty string

let string = "";

for(let i = 0; i < n; i++) { // external loop

  for(let j = 0; j < n; j++) { // internal loop

    string += "*";

  }

  // newline after each row

  string += "\n";

}

// printing the string

console.log(string);

DEMO

   

Square Star Pattern in Javascript  Demo

Scaler Topics | JavaScript for Beginners - Getting Started - 1

 Q1 -- What is JavaScript?

 Ans--- JavaScript is a scripting language used to make the website interactive

Q2 -- What is Node.js?

 Ans---   It is a JavaScript runtime and open source , cross-platform environment for server development built on chrome’s V8 Engine

Q3 -- Which HTML tag links a JS file with an HTML file?

Ans---    script

Q4  -- What will be the output of the following code?

let a=3000;
console.log("I love you", a,"!");

Ans---I love you 3000 !

Q5 --  Which of the following scoping type does JavaScript use?

Ans--- Lexical

What is Node.js?

 It is a JavaScript runtime and open source , cross-platform environment for server development built on chrome’s V8 Engine

What is JavaScript?

 JavaScript is a scripting language used to make the website interactive

How to reverse an array in Javascript?

 

Method 1

<script>

    let numbers_array = [11, 22, 33, 54, 55];

     

    console.log("Original Array: ");

    console.log(numbers_array);

     

    numbers_array.reverse();

     

    console.log("Reversed Array: ");

    console.log(numbers_array);

</script>




    Output:

Original Array: 
[ 11, 22, 33, 44, 55 ]
Reversed Array: 
[ 55, 44, 33, 22, 11 ]

Method 2

 let original_array = [11, 22, 33, 44];
 
 let reversed_array = [];
 
 console.log("Original Array: ");
 console.log(original_array);
 
  for (let i = original_array.length - 1; i >= 0; i--) {
        reversed_array.push(original_array[i]);
  }
 
  console.log("Reversed Array: ");
  console.log(reversed_array);

    Output:
Original Array: 
[ 11, 22, 33, 44, 55 ]
Reversed Array: 
[ 55, 44, 33, 22, 11 ]
Method 3
let original_array = [11, 22, 33, 44, 55, 66];
 
let reversed_array = [];
 
console.log("Original Array: ");
console.log(original_array);
 
original_array.forEach((element) => {
      reversed_array.unshift(element);
});
 
console.log("Reversed Array: ");
console.log(reversed_array);
Original Array: 
[ 11, 22, 33, 44, 55,66 ]
Reversed Array: 
[66, 55, 44, 33, 22, 11 ]