<!DOCTYPE HTML PUBLIC "-//w3c//DTD HTML 4.01//EN" "http://www.w3org./TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv = "Content-Type" content="text/html" charset="GBK">
<title>99乘法表</title>
</head>
<body>
<script type="text/javascript">for(var a = 1; a<10; a++){
for(var b = 1 b<10; b++){
//实现乘法公式
alert(document.write(a+"*"+b+"="+a*b+" "));
}
alert(document.write("<br />"));
}
</script> </body>
</html>浏览器JavaScriptHTML
<script type="text/javascript">
for(var a = 1; a<10; a++){ for(var b = 1;b<10; b++){
//实现乘法公式
document.write(a+"*"+b+"="+a*b+" ");
}
document.write("<br />");
}
</script>
<script type="text/javascript">
window.onload = function(){
for(var a = 1; a<10; a++){
for(var b = 1;b<10; b++){
//实现乘法公式
document.write(b+"*"+a+"="+a*b+" ");
if(b==a)break; }
document.write("<br />");
}
}
</script>楼上的欠缺一个判断【 if(b==a)break;】
<!DOCTYPE HTML PUBLIC "-//w3c//DTD HTML 4.01//EN" "http://www.w3org./TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv = "Content-Type" content="text/html" charset="GBK">
<title>99乘法表</title>
</head>
<body>
<script type="text/javascript">
for(var a = 1; a<=9; a++){
for(var b = 1; b<=a; b++){
document.write(b+"*"+a+"="+a*b+" ");
}
document.write("<br />");
}
</script></body>
</html>