如果安装Adobe Reader的JavaScript检测 [英] Javascript Detect if Adobe Reader is installed
问题描述
我们有一些PDF表单在非Adobe PDF阅读器，显示不正确（即WebKit的内置PDF阅读器不正常显示一些专有的Adobe的东西）。我们想检测时，用户不用的安装了Adobe的的PDF阅读器，并给他们一个小小的警告，但我有一个很难搞清楚如何做到这一点在2014年。
We have some PDF forms that don't display correctly in non-Adobe PDF readers (i.e. WebKit's built-in PDF reader does not properly display some proprietary Adobe things). We want to detect when users don't have Adobe's PDF Reader installed and give them a little warning, but I'm having a hard time figuring out how to do it in 2014.
看来这个剧本在2011年工作基本上它遍历 navigator.plugins 并查找插件名为安装Adobe Acrobat 或 Chrome浏览器PDF阅读器。
It seems this script worked in 2011. Basically it loops through navigator.plugins and looks for plugins with the name Adobe Acrobat or Chrome PDF Viewer.
for(key in navigator.plugins) {
var plugin = navigator.plugins[key];
if(plugin.name == "Adobe Acrobat") return plugin;
}
闪存进到今天，Adobe公司必须改变一些东西，因为我已经安装使用Adobe Acrobat，但它似乎并没有在 navigator.plugins ！现在哪里是它，我怎么发现的呢？
Flash forward to today, Adobe must have changed something, because I have Adobe Acrobat installed, but it doesn't seem to be in navigator.plugins! Where is it now and how do I detect it?
推荐答案
好吧，我已经更新了脚本，它的工作完全没有在所有浏览器都：
Ok I've updated the script and it's working perfectly fine in all browsers now:
<!DOCTYPE HTML>
<html>
<head>
<title> New Document </title>
<script>
//
// http://thecodeabode.blogspot.com
// @author: Ben Kitzelman
// @license: FreeBSD: (http://opensource.org/licenses/BSD-2-Clause) Do whatever you like with it
// @updated: 03-03-2013
//
var getAcrobatInfo = function() {
var getBrowserName = function() {
return this.name = this.name || function() {
var userAgent = navigator ? navigator.userAgent.toLowerCase() : "other";
if(userAgent.indexOf("chrome") > -1){
return "chrome";
} else if(userAgent.indexOf("safari") > -1){
return "safari";
} else if(userAgent.indexOf("msie") > -1 || navigator.appVersion.indexOf('Trident/') > 0){
return "ie";
} else if(userAgent.indexOf("firefox") > -1){
return "firefox";
} else {
//return "ie";
return userAgent;
}
}();
};
var getActiveXObject = function(name) {
try { return new ActiveXObject(name); } catch(e) {}
};
var getNavigatorPlugin = function(name) {
for(key in navigator.plugins) {
var plugin = navigator.plugins[key];
if(plugin.name == name) return plugin;
}
};
var getPDFPlugin = function() {
return this.plugin = this.plugin || function() {
if(getBrowserName() == 'ie') {
//
// load the activeX control
// AcroPDF.PDF is used by version 7 and later
// PDF.PdfCtrl is used by version 6 and earlier
return getActiveXObject('AcroPDF.PDF') || getActiveXObject('PDF.PdfCtrl');
} else {
return getNavigatorPlugin('Adobe Acrobat') || getNavigatorPlugin('Chrome PDF Viewer') || getNavigatorPlugin('WebKit built-in PDF');
}
}();
};
var isAcrobatInstalled = function() {
return !!getPDFPlugin();
};
var getAcrobatVersion = function() {
try {
var plugin = getPDFPlugin();
if(getBrowserName() == 'ie') {
var versions = plugin.GetVersions().split(',');
var latest = versions[0].split('=');
return parseFloat(latest[1]);
}
if(plugin.version) return parseInt(plugin.version);
return plugin.name
}
catch(e) {
return null;
}
}
//
// The returned object
//
return {
browser: getBrowserName(),
acrobat: isAcrobatInstalled() ? 'installed' : false,
acrobatVersion: getAcrobatVersion()
};
};
var info = getAcrobatInfo();
alert(info.browser+ " " + info.acrobat + " " + info.acrobatVersion);
</script>
</head>
<body>
</body>
</html>
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