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[英]Why am I suddenly getting a “No 'Access-Control-Allow-Origin' header is present” error on my website?
[英]Why I am getting this error with the script in my website?
我试图通过添加以下由一群出色的开发人员和该社区中的人建议的代码来解决我的网站中JQuery LavaLamp菜单栏所面临的问题:
<script>
if ($.browser.version < 9.0 && $.browser.msie) {
document.getElementsByTagName("head")[0].innerHTML = '<script type="text/javascript" src="./Scripts/jquery.easing.1.1.js"></script><script type="text/javascript" src="./Scripts/jquery.preloader.js"></script><script type="text/javascript" src="./Scripts/jquery.lavalamp.js"></script><script type="text/javascript" src="./Scripts/lavalamp-config.js"></script>';
}
else {
document.getElementById("head")[0].innerHTML = '<script type="text/javascript" src="./Scripts/jquery.easing.1.1.js"></script><script type="text/javascript" src="./Scripts/jquery.preloader.js">';
}
</script>
在Visual Studio 2010中,出现以下错误
未终止的字符串常量
在以下行中:
document.getElementsByTagName("head")[0].innerHTML = '<script type="text/javascript" src="./Scripts/jquery.easing.1.1.js"></script><script type="text/javascript" src="./Scripts/jquery.preloader.js"></script><script type="text/javascript" src="./Scripts/jquery.lavalamp.js"></script><script type="text/javascript" src="./Scripts/lavalamp-config.js"></script>';
那我该如何解决这个问题呢?
更新#1:
我将代码更新为您建议的代码,但仍然出现相同的错误。 另外,这是错误的快照:
更新#2我修改了代码,使母版页包含以下代码,但仍然出现与上面快照所示的页面顶部相同的错误。
<head>
<script type="text/javascript">
function getInternetExplorerVersion()
// Returns the version of Internet Explorer or a -1
// (indicating the use of another browser).
{
var rv = -1; // Return value assumes failure.
if (navigator.appName == 'Microsoft Internet Explorer') {
var ua = navigator.userAgent;
var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
if (re.exec(ua) != null)
rv = parseFloat(RegExp.$1);
}
return rv;
}
</script>
<script type="text/javascript">
if (getInternetExplorerVersion() < 9.0 && browser_type = "Microsoft Internet Explorer") {
document.getElementsByTagName("head")[0].innerHTML = "<script type='text/javascript' src='./Scripts/jquery.easing.1.1.js'></script><script type='text/javascript' src='./Scripts/jquery.preloader.js'></script><script type='text/javascript' src='./Scripts/jquery.lavalamp.js'></script><script type='text/javascript' src='./Scripts/lavalamp-config.js'></script>";
} else {
document.getElementById("head")[0].innerHTML = "<script type='text/javascript' src='./Scripts/jquery.easing.1.1.js'></script><script type='text/javascript' src='./Scripts/jquery.preloader.js'>";
}
</script>
</head>
即使关闭脚本标记位于字符串文字中,它也可能被浏览器解释为当前脚本块的末尾,这反过来意味着特定的字符串文字是未终止的。
在您的字符串中,而不是
'</script>'
你可以做
'<\/script>'
(当JS运行时,反斜杠将被忽略。)或者有时您会看到类似以下内容的内容:
'<' + '/script>'
或将<
替换为等效的字符代码:
'\x3C/script>'
试试看,使用以下功能获取浏览器版本号
function getInternetExplorerVersion()
// Returns the version of Internet Explorer or a -1
// (indicating the use of another browser).
{
var rv = -1; // Return value assumes failure.
if (navigator.appName == 'Microsoft Internet Explorer') {
var ua = navigator.userAgent;
var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
if (re.exec(ua) != null)
rv = parseFloat(RegExp.$1);
}
return rv;
}
及以下获取浏览器名称
var browser_type = navigator.appName(“ Microsoft Internet Explorer”)
所以你的新功能看起来像
if (getInternetExplorerVersion() < 9.0 && browser_type = "Microsoft Internet Explorer") {
document.getElementsByTagName("head")[0].innerHTML = "<script type='text/javascript' src='./Scripts/jquery.easing.1.1.js'></script><script type='text/javascript' src='./Scripts/jquery.preloader.js'></script><script type='text/javascript' src='./Scripts/jquery.lavalamp.js'></script><script type='text/javascript' src='./Scripts/lavalamp-config.js'></script>";
} else {
document.getElementById("head")[0].innerHTML = "<script type='text/javascript' src='./Scripts/jquery.easing.1.1.js'></script><script type='text/javascript' src='./Scripts/jquery.preloader.js'>";
}
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