项目中要判断用户是否有安装pdf阅读器以便于打印 或者是否可以打开pdf文档 这个好像没找到什么方法可以判断用户是否可以打开pdf文档 在网上找了下有判断adobe的 ,不知道有没有直接判断用户是否可以打开pdf文件的方法?
var adobeReaderInfo = {
installed : false,
version : "0.0",
goRedirect:false,
getAdobeReader : function(){
if (navigator.plugins && navigator.plugins.length) {
for (var x = 0; x < navigator.plugins.length; x++) {
if (navigator.plugins[x].description.indexOf("Adobe Acrobat") != -1) {
adobeReaderInfo.version = parseFloat(navigator.plugins[x].description.split("Version ")[1]);
if (adobeReaderInfo.version.toString().length == 1) adobeReaderInfo.version += ".0";
adobeReaderInfo.installed = true;
break;
} else if (navigator.plugins[x].description.indexOf("Adobe PDF Plug-In") != -1) {
adobeReaderInfo.installed = true;
adobeReaderInfo.version = "8+";
break;
}
}
} else if (window.ActiveXObject) {
for (x = 2; x < 10; x++) {
try {
oAcro = eval("new ActiveXObject('PDF.PdfCtrl." + x + "');");
if (oAcro) {
adobeReaderInfo.installed = true;
adobeReaderInfo.version = x + ".0";
}
}
catch (e) { }
}
try {
oAcro4 = new ActiveXObject("PDF.PdfCtrl.1");
if (oAcro4) {
adobeReaderInfo.installed = true;
adobeReaderInfo.version = '4.0';
}
}
catch (e) { }
try {
oAcro7 = new ActiveXObject('AcroPDF.PDF.1');
if (oAcro7) {
adobeReaderInfo.installed = true;
adobeReaderInfo.version = '7.0';
}
}
catch (e) { }
}
},
judgeAdobe:function(){
if(adobeReaderInfo.installed){
if(parseInt(adobeReaderInfo.version) < 7){
if(confirm("adobe reader 版本太低可能会引起打印的文件布局错位,是否更新到最新版本?")){
adobeReaderInfo.goRedirect = false;
window.open("http://get.adobe.com/cn/reader/","","");
return false;
}else{
adobeReaderInfo.goRedirect = true;
}
}else{
adobeReaderInfo.goRedirect = true;
}
}else{
if(confirm("请先安装adobe reader")){
window.open("http://get.adobe.com/cn/reader/","","");
return false;
}
}
}
};