JS 99 multiplication Table

1, we first consider the outermost loop how many times (total nine times)

Let's first build the outer loop (relative to how many rows)

for (var i = 1;i<=9; i++) {                }

2, we consider the number of times each line to print

for (var i = 1;i<=9; i++) {    = 1;j<=i;j++) {}            }

The loop inside is the number of each column we print each time.

for (var i = 1;i<=9; i++) {for (Var j= 1;j<=i;j++) {                    var result= I*j; Store multiply Resultsdocument.write (j + "*" + i + "= "+ result +"&nbsp&nbsp&nbsp&nbsp "); Show results on page if (I== 3 && J==2| | I== 4 && J==2) {//To avoid double-digit and one-digit gap problemsdocument.write ("&nbsp&nbsp"); }}document.write ("<br>"); Line wrapping after printing the column}

JS 99 multiplication Table