如果语句检查源图像

Question

我想知道如何在jQuery脚本中创建一个If语句来检查源图像文件是否是特定的，如果是这样的话在If语句中执行代码。我想如果语句执行其代码只有当源=

<%= Page.ResolveUrl("~/{0}/_res/_images/icon_noticeActive.png", PBS.Cms.Settings.PBSFolderName) %>". Here's my html code and jquery script below. 

$("img#importantImg").click(function() { 
      if ($("#headerAlertMessage").is("<%= Page.ResolveUrl("~/{0}/_res/_images/icon_noticeActive.png", PBS.Cms.Settings.PBSFolderName) %>") 
       $("#headerAlertMessage").show();              
       $("#importantImg").attr("src", "<%=Page.ResolveUrl("~/{0}/_res/_images/icon_noticeActive.png", PBS.Cms.Settings.PBSFolderName) %>");            
}); 

这里是我的html代码，这上面的脚本引用：

<li class="levelOne" ><a class="button notice buttonEight" href="#"> 
     <asp:image id="importantImg" runat="server" ClientIDMode="Static" /></a></li> 


</ul> 

<asp:PlaceHolder ID="contentPlaceholder1" runat="server" EnableViewState="false" /> 
</div> 


<div id="headerAlertMessage" runat="server" ClientIDMode="Static" style="display:none"> 
<div id = "divLayer1" class="alertPod"> 
    <img src="<%= Page.ResolveUrl("~/{0}/_res/_images/icon_alertMessage.png", PBS.Cms.Settings.PBSFolderName) %>" /> 

</div> 

<div id = "divLayer2" class="msgPod"> 
    <div id="divLayer3" class="messageWrapper"> 
     <h6>IMPORTANT ANNOUNCEMENT</h6> 
     <div id="divLayer4" class="box" >  
      <div id = "divLayer5" class="viewport" style="overflow: auto; height: 48px;" runat="server"> 
       <p> 
       <asp:Literal ID="ltimportantannouncementTitle" runat="server"></asp:Literal> 
       <br /> 
       <asp:Literal ID="ltimportantannouncementSummary" runat="server"> </asp:Literal> 
       </p> 
      </div> 
     </div> 
    </div> 
    <a href="#" ><img id="alertCloseBtn" ClientIDMode="Static" src="<%=  Page.ResolveUrl("~/{0}/_res/_images/button_alertMsgClose.png", PBS.Cms.Settings.PBSFolderName) %>" /></a> 

</div> 
</div> 

Answer 1

$('img[src="your_source_goes_here.jpg"]').each(function (index, value) { 
    //run your code here 
}); 

这会发现所有的图像具有特定源，迭代通过它们，它允许您在.each()函数内执行任何您想要的操作。请注意，value是在.each()函数中保存对图像的引用的变量。

这里是他们的源图像中选择一个的jsfiddle：http://jsfiddle.net/jasper/u5xWP/