我怎样才能使buildTriangle（lines）建立一个矩形

Question

I am currently taking the Udacuty intro to Javascript course. This quiz that I have completed from the course, makes you create a function that takes a number and build a triangle using the number it has taken as the triangle widest width.

My question, is how can I change the code of the function buildTriangle(lines) to make function makeLine(lenghth) build a Square instead?

Thanks for your help.

 function makeLine(length) { var line = ""; for (var j = 1; j <= length; j++) { line += "* "; } return line + "\\n"; } function buildTriangle(lines){ var triangle = ""; for(i = 1; i <= lines; i++){ triangle += makeLine(i); } return triangle; } console.log(buildTriangle(10)); 

Answer 1

triangle += makeLine(lines); instead of triangle += makeLine(i);

 function makeLine(length) { var line = ""; for (var j = 1; j <= length; j++) { line += "* "; } return line + "\\n"; } function buildTriangle(lines){ var triangle = ""; for(i = 1; i <= lines; i++){ triangle += makeLine(lines); } return triangle; } console.log(buildTriangle(10)); 

Answer 2

Right now each time it creates a new line it looks at the "i" from the for loop to tell it how long it should make it. This means everytime it will be one longer and create a triangle. If you want it to create a square, you want every line to the same length as the height of the square. so you want to change it from triangle += makeLine(i); to triangle += makeLine(lines); . That way it every time they make a new line it's the same length as the height (lines).