在 HTML 或 JavaScript 中,是否有任何选项,使得当用户点击链接时,如果该链接可用,则打开该链接,如果不可用,则打开另一个链接。
以下是我的部分代码:
以下是我的部分代码:
<div id="sidebar-collapse" class="col-sm-3 col-lg-2 sidebar">
<ul>
<li><a href="/returns"><span class="glyphicon glyphicon-log-in"></span> Returns</a></li>
<li class="active"><a href="/pay_reco" target="_blank"><span class="glyphicon glyphicon-log-in"></span> Payment Recouncillation </a></li>
<li ><a href="/pay_get" target="_blank"><span class="glyphicon glyphicon-log-in"></span> Payment Get </a></li>
<li><a href="/import"><span class="glyphicon glyphicon-log-in"></span> Import </a></li>
<li>
<!-- Here I want to add Two link in a href tag if first link does not
available (web page not available) then it go to another link
<!-- <object data="http:/127.0.0.1:9004" type="href" > -->
<a target="_blank" href="http://127.0.0.1:9001">
<span class="glyphicon glyphicon-log-in"></span>
ComPare
</a>
</li>
<li><a target="_blank" href="http://127.0.0.1:9000"><span class="glyphicon glyphicon-log-in"></span> Portal </a></li>