Question

calling javascript with parameter in listboxitem

Asked by: bertino12

I need to call a javascript function in the listboxitems text, but im getting an error. Any ideas how to fix?

<asp:ListItem Text="<a href='javascript:popUp('asdf');'>Link1</a>"></asp:ListItem>

                                  
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Asked On
2009-07-02 at 07:30:39ID24539690
Topic

Programming for ASP.NET

Participating Experts
3
Points
500
Comments
5

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Answers

 

by: mohan_sekarPosted on 2009-07-02 at 07:39:20ID: 24763838

Just escape single quotes like this
<asp:ListItem Text="<a href='javascript:popUp("""asdf""");'>Link1</a>"></asp:ListItem>

 

by: bertino12Posted on 2009-07-02 at 07:55:18ID: 24764035

WHen I do that it shows up like this when I run it

Link1">

 <asp:ListItem Text="<a href='javascript:popUp("'"asdf"'");'>Link1</a>"></asp:ListItem>

                                              
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by: tiagosalgadoPosted on 2009-07-02 at 08:29:47ID: 24764460

 

by: bertino12Posted on 2009-07-02 at 08:56:46ID: 24764726

I really need to do it like this. It must be possible.

 

by: 8riaNPosted on 2009-07-02 at 11:03:44ID: 24765953

What I don't understand is what kind of HTML you want emitted - it looks like you're trying to produce something like:

        <select size="4" name="ListBox1" id="ListBox1">
      <option value="test"><a href="javascript: alert('hi')">hi</a></option>

But that just doesn't work. You can't make a <select> item clickable by adding an anchor tag, it's not supported functionality.

What you need is an onChange event handler for the whole box that does your popup for you. It's not idea, but the only real alternative is a round-trip to the server and an onLoad popup.  The onChange solution works like this:

in the head section:
 
<script type="text/javascript">
function listboxChanged(box) {
  alert(box.options[box.selectedIndex].text) ;
}
</script>
 
and then add this to the listbox itself:
"onChange = listboxChanged(this); "

                                              
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