<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script type="text/javascript">
var row=prompt("输入行数");
var col=prompt("输入列数");
for (var i=1;i<=row;i++){
if (i%2==1){
for (var j=1; j<=col;j++){
if (j%2==1){
document.write('<span style="color:red";>你</span>');
}else{
document.write('<span style="color:blue";>好</span>');
};
};
}else{
for (var j=1; j<=col;j++){
if (j%2==1){
document.write('<span style="color:blue";>你</span>');
}else{
document.write('<span style="color:red";>好</span>');
};
};
};
document.write("<br>")
}
</script>
</head>
<!--<span> style="color:red";</span>-->
<body>
</body>
</html>
输入5行10行返回值：