Write a JavaScript program to construct the following pattern, using a nested for loop. * * * * * * * * * * * * * * *

var x,y,chr;
for(x=1; x<=6; x++)
{
   for (y=1; y<x; y++)
     {
    chr=chr+("*");       
      }
 console.log(chr);
 chr='';   
}