.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>welcome </TITLE>
</HEAD>
<BODY>
<div >九九乘法表</div>
<script src="1-import.js"></script>
</BODY>
</HTML>
.js
for(var i=1;i<=9;i++){
for(var j=1;j<=i;j++){
document.write(i+"*"+j+"="+i*j+" ");
}
document.write("<br/>");
}