Javascript implements symmetric up-down and left-right 9 multiplication tabulation _ javascript skills

9-9 multiplication tables can be implemented in many languages. This article introduces four symmetric 9-9 multiplication tables using the for and while loops in js, for friends who need the 9-9 multiplication table, refer to the 9-9 multiplication table in many languages. This article describes two common types of loops (For and While) in JavaScript to complete these four symmetric 9-9 multiplication tables. This example is a good way to practice loops, because the layout is not neat, a table is circulated.

1. trapezoid multiplication table of degree in the lower left corner:

For loop code

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