如果从远程加载失败，则加载本地引导 css 和 js [英] load local bootstrap css and js if load fail from remote
本文介绍了如果从远程加载失败，则加载本地引导 css 和 js的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试加载本地 css &当远程文件不可用时，js 文件.(wifi断开)主要问题是我不知道如何让 css 正确加载".据我所知，jquery 应该放在正文的底部以减少页面加载时间.在浏览器地址栏输入localhost:8000//example.html(使用静态网页浏览器).
I'm trying to load local css & js file when remote file is not available. (wifi dis-connected) The major problem is "I don't know how to let css load proper". As I know jquery should put on bottom of body to reduce page load time. In browser's address line, I input localhost:8000//example.html (use a static web page web browser).
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="description" content="Go By Example - Google Go (golang) code examples" />
<link rel="icon" href="favicon.ico">
<title>Go by Example - Google Go (golang) code examples</title>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css">
</head>
<body>
<span class="glyphicon glyphicon-flash"></span>
...
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>!window.jQuery && document.write(unescape('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script>
<script id="bsscript" src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script>$("#bsscript").load("js/bootstrap.min.js")</script>
</body>
</html>
铬的输出错误信息
GET file://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css net::ERR_FILE_NOT_FOUND local.html:9
GET file://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css net::ERR_FILE_NOT_FOUND local.html:10
GET http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js net::ERR_INTERNET_DISCONNECTED local.html:16
GET file://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js net::ERR_FILE_NOT_FOUND local.html:18
推荐答案
bootstrap cdn callback :
<head>
<!-- Bootstrap CSS CDN -->
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">
</head>
<body>
<!-- APP CONTENT -->
<!-- jQuery CDN -->
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<!-- jQuery local fallback -->
<script>window.jQuery || document.write('<script src="/local/jquery.min.js"><\/script>')</script>
<!-- Bootstrap JS CDN -->
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
<!-- Bootstrap JS local fallback -->
<script>if(typeof($.fn.modal) === 'undefined') {document.write('<script src="/local/bootstrap.min.js"><\/script>')}</script>
<!-- Bootstrap CSS local fallback -->
<script>
$(document).ready(function() {
var bodyColor = $('body').css('color');
if(bodyColor != 'rgb(51, 51, 51)') {
$("head").prepend('<link rel="stylesheet" href="/local/bootstrap.min.css">');}});
</script>
</body>
这篇关于如果从远程加载失败，则加载本地引导 css 和 js的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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