用JS写了一个乘法口诀表可是换行语句遇到了困难

Question

 <script type="text/javascript">



function chengfakoujue(){

    var str="";

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

        for(var j=1;j<=i;j++)

        document.write(j+"*"+i+"="+(i*j)+" ");

        }

        document.write("在这一行求一条可以用的换行语句");

    }

    document.getElementById("chengfakoujue").innerHTML=chengfakoujue();

</script>

Answer 1

http://www.chinadmd.com/file/vrarstp6wiwtwpo6xsruptow_1.html