Create a function christmasTree(height) that returns a christmas tree of the correct height christmasTree(5) should return: * *** ***** ******* ********* Height passed is always an integer between 0 and 100. Use \n for newlines between each line. Pad with spaces so each line is the same length. The last line having only stars, no spaces.

christmasTree.js

function christmasTree(height) {
var value  = "";
for(i = 1; i<= height; i++ ) {
 var blank = " ".repeat(height-i);
 value += blank + "*".repeat(1+((i-1)*2)) + blank;
 value += i < height ? "\n" : "";
}
    return value

}

String.prototype.repeat = function(times) {
   return (new Array(times + 1)).join(this);
};