Js arranged to make a star with a triangular

* Playing with a triangular arrangement, it should mainly decomposed. It is actually formed in a pattern with spaces * and combinations thereof. The number of spaces per line minus the current number of rows is the number of rows, the number of stars is 2x the current line number -1

 

// let the user enter the number of rows, using a nested for loop being played with the stars, the number of lines equal to the input digital

// For example: a user input 6

// *

// ***

// *****

// *******

// *********

// ***********

let readline = require("readline-sync");

console.log ( "Please enter the number of rows");

let line = readline.question("");

let strSpace = "";

let strStar = "";

let str = "";

for (let i = 1; i <= line; i++) {

for (let j = 1; j <= line - i; j++) {

strSpace = strSpace + " ";

}

for (let k = 1; k <= 2 * i - 1; k++) {

Strs Strs + = '*';

}

str = strSpace + strStar;

console.log(str);

str = "";

strSpace = "";

strStar = "";

}