Javascript - Add a line break into a variable

Question

I am starting on Javascript and I really have no idea how to put a linebreak into a variable:

I would like to build the following triangle without using print, just putting the result into a string :

Any idea ? Thanks

        #
       ##
      ###
     ####
    #####
   ######


var creerTriangle= function (taille) {
    var triangle = "";
    for (var i = 1; i <= taille; i++) {
       var ligne = "";
        for (var j=1; j <= (taille-i); j++) {
        ligne+=(" ");
          }
        for (var k=1; k<=i; k++) {
           ligne += "#";
          }       
         triangle += ligne              // how to put a linebreak here ?;
    };
 return triangle;
};

Answer 1

I think you just need "\\n". See where I've written <---

 /* # ## ### #### ##### ###### */ var creerTriangle= function (taille) { var triangle = ""; for (var i = 1; i <= taille; i++) { var ligne = ""; for (var j=1; j <= (taille-i); j++) { ligne+=(" "); } for (var k=1; k<=i; k++) { ligne += "#"; } triangle += ligne +"\\n" //<--- }; return triangle; }; console.dir(creerTriangle(6));

Answer 2

For fun, here is another way to write this with ESNEXT:

 const creerTriangle = tally => Array(tally) .fill() .map(() => '#'.repeat(tally)) .map((i, index) => i.replace(new RegExp(`#{${index}}`), ' '.repeat(index)) ) .reverse() .join('\\n') console.log(creerTriangle(6))

https://repl.it/@ryanpcmcquen/javascriptCreateTriangle