用js打印*号等腰三角形

时间：2018-09-16 18:26:01 收藏：0 阅读：739

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

console.log("请输入行数：");

let rows = ~~readline.question(‘‘)

let str = "";

let star = "";

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

let str = "";

for (let k = 0; k < rows - i; k++) {

str += ` `;

}

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

star += "*";

}

console.log(`${str}${star}`);

str = "";

star = "";

}

原文：https://www.cnblogs.com/huangshan-0809/p/9656803.html