HTML部分
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<table>
<th colspan="9">九九乘法表</th>
</table>
<script src="./index.js"></script>
</body>
</html>
JS部分
let table = document.getElementsByTagName("table")[0];
for (let i = 1; i <= 9; i++) {
let tr = document.createElement("tr");
for (let j = 1; j <= i; j++) {
let td = document.createElement("td");
let equation=document.createTextNode(j+"*"+i+"="+i*j);
td.appendChild(equation);
td.style.cssText='border:1px solid';
tr.appendChild(td);
}
table.appendChild(tr);
console.log(table);
}