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如何判断ACTIVEX控件是否下载

时间： 2021-07-31 作者：daque

大师不妨看到鄙人载activex控件时ie常常会弹出一个对话框问能否承诺载入并实行该activex控件,即使用户点要不控件没辙载入,那我反面js对控件本领的挪用确定会堕落,怎样制止这个题目呢?能否不妨在挪用本领之前用js确定一下呢?请看我底下的解说?本领一: 你不妨试着挪用activex control里的一个本领method, 如挪用不可功,则证明control还没有载入胜利.比方:<script language="javascript">var bcontrolloaded=false;function window.onload(){try{if (objectid.somemethod)bcontrolloaded = true;}catch (ex){}alert(bcontrolloaded);}</script><object id="objectid"></object>换句话说,在你挪用本领这前,查看bcontrolloaded能否归来真.若不是，则报告警方，也不妨转到用户设置的网页表露control没有载入胜利．<script language="javascript">function window.onload(){try{if (objectid.somemethod)bcontrolloaded = true;}catch (ex){alert("you did not install the control properly!");window.location.href="someotherpage.html";}}</script>本领二:<html xmlns:cc><head><style> @media all { cc\:clientcaps {behavior:url(#default#clientcaps)}} </style><title>client capabilities</title></head><body onload="showcomponentstatus();" bgcolor="#ffffff"><cc:clientcaps id=clientcaps /></body><script language=javascript>function showcomponentstatus(){displaycomponent("address book", "{7790769c-0471-11d2-af11-00c04fa35d02}");displaycomponent("directanimation", "{283807b5-2c60-11d0-a31d-00aa00b92c03}");displaycomponent("directanimation java classes", "{4f216970-c90c-11d1-b5c7-0000f8051515}");displaycomponent("directshow", "{44bba848-cc51-11cf-aafa-00aa00b6015c}");displaycomponent("dynamic html data binding", "{9381d8f2-0288-11d0-9501-00aa00b911a5}");displaycomponent("dynamic html data binding for java", "{4f216970-c90c-11d1-b5c7-0000f8051515}"); displaycomponent("internet connection wizard", "{5a8d6ee0-3e18-11d0-821e-444553540000}");displaycomponent("internet explorer 5 web browser", "{89820200-ecbd-11cf-8b85-00aa005b4383}"); displaycomponent("internet explorer classes for java", "{08b0e5c0-4fcb-11cf-aaa5-00401c608555}"); displaycomponent("internet explorer help", "{45ea75a0-a269-11d1-b5bf-0000f8051515}");displaycomponent("internet explorer help engine", "{de5aed00-a4bf-11d1-9948-00c04f98bbc9}"); displaycomponent("windows media player", "{22d6f312-b0f6-11d0-94ab-0080c74c7e95}");displaycomponent("netmeeting nt", "{44bba842-cc51-11cf-aafa-00aa00b6015b}");displaycomponent("offline browsing pack", "{3af36230-a269-11d1-b5bf-0000f8051515}");displaycomponent("outlook express", "{44bba840-cc51-11cf-aafa-00aa00b6015c}");displaycomponent("task scheduler", "{cc2a9ba0-3bdd-11d0-821e-444553540000}");displaycomponent("microsoft virtual machine", "{08b0e5c0-4fcb-11cf-aaa5-00401c608500}");displaycomponent("vrml 2.0 viewer", "{90a7533d-88fe-11d0-9dbe-0000c0411fc3}");displaycomponent("wallet", "{1cdee860-e95b-11cf-b1b0-00aa00bbad66}");}function displaycomponent(compdesc, compid){if (clientcaps.iscomponentinstalled(compid, "componentid")){alert("installed.");}}</script></html>

如何判断ACTIVEX控件是否下载

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