[JS练习 4]输出99乘法表

for(var second=1; second<=9; second++)
	{
	    //'string'.repeat(5)   对string重复5次
		document.write(`&nbsp`.repeat((9-second)*6));
		for(var first=1; first<=second; first++)
	    {
		    document.write(first,'*',second,'=',first*second,'&nbsp'.repeat(2));
	    }
	    document.write(`<br/>`);
	}

输出结果：