replaceWith()与replaceAll()两个方法作用相同。
见代码
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="js/jquery-3.3.1.js"></script>
</head>
<body>
<span>Hello</span>
<b>Hello</b>
<i>Hello</i>
<script>
$("span,b,i").replaceWith("<h3>Word</h3>")
//等同于$("<h3>Word</h3>").replaceAll("span,b,i");
</script>
</body>
</html>
<!D
