再index.html添加如下代码
<meta name="viewport"
content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no" />
全部代码
<!DOCTYPE html>
<html lang="">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<link rel="icon" href="<%= BASE_URL %>titimg.png">
<meta name="viewport"
content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no" />
<title>工具</title>
</head>
<body>
<noscript>
<strong>We're sorry but <%= htmlWebpackPlugin.options.title %> doesn't work properly without JavaScript enabled.
Please enable it to continue.</strong>
</noscript>
<div id="app"></div>
</body>
</html>