javascript--Cycle--print stars and 99 multiplication tables

1. Print 99 multiplication table

    function Chengfa () {        // repeatedly call formula for        (var r=1;r<=9;r++) {             for (var i=1,str= ""; i<=r;i++) {                str=str+ (i+ "x" +r+ "=" +i*r+ "\ T") ;            }            Console.log (str);        }    }    CHENGFA ();

2. Print Stars

   function Leftstar (l) {        for (var r=1;r<=l;r++) {            for (var i=1 , str= ""; i<=r;i++) {                str+ = "*";            }            Console.log (str);        }    }    Leftstar (5);

3. Print stars on the right

    function Rightstar (l) {        for (var r=1;r<=l;r++) {            for (var i= 1,str= ""; i<=l;i++) {                if(i<=l-r) {                    str+ = "";                } Else {                    str+ = "*";                }            } Console.log (str);        }    }    Rightstar (6);

4. Print Star Center

    function MidSTAR (l) {        for (var r=1;r<=l;r++) {            for (var i=1, Str= ""; i<=l+r-1;i++) {                if(i<=l-r) {                    str+ = "";                } Else {                    str+ = "*";                }            } Console.log (str);        }    }    MidSTAR (7);

javascript--Cycle--print stars and 99 multiplication tables