Sarching through names inside dropdown box.

[sharapov]

I am using the following code to search throught the "user's names" in the dropdown box. In other words when I start typing user name it automatically bring it up. Everything works fine, but if I press on the up or down arrow on the keyboard while dropdown box selected, the script shows an error. can anybody help me to elemenate it?

var testString = "";
          
           function addChar(e) {
          
                if (e.keyCode) {
                   code = e.keyCode;
               } else if (e.which) {
                   code = e.which;
               }
              
                if (code == 8) {
                   testString = testString.replace(/.$/, "");
               } else {
                  testString += String.fromCharCode(code);
              }
              
               re = new RegExp("^" + testString, "i");
              
               var matched = false;

              for (i = 0; i < document.frmTest.drpTest.options.length; i++) {
                  if (document.frmTest.drpTest.options[i].text.match(re)) {
                      setTimeout(&quot;document.frmTest.drpTest.selectedIndex = i&quot;, 50);
                      matched = true;
                      break;
                  }
              }
              
               if (!matched) {
                  testString = testString.replace(/.*(.)$/, &quot;$1&quot;);
              }
          
           }

The form looks something like this:

<form name=&quot;frmTest&quot;>
<select name=&quot;drpTest&quot; id=&quot;drpTest&quot; onkeydown=&quot;addChar(event);&quot;>
<option selected>Choose Recipient...</option>
<option> . . .</option>
</select>
</form>

 

[mwolf00]

put this

function addChar(e) {
if (e.keyCode >=65 && e.keyCode <=122){
if (e.keyCode) {
code = e.keyCode;
} else if (e.which) {
code = e.which;
}

if (code == 8) {
testString = testString.replace(/.$/, &quot;&quot;
} else {
testString += String.fromCharCode(code);
}

re = new RegExp(&quot;^&quot; + testString, &quot;i&quot;

var matched = false;

for (i = 0; i < document.frmTest.drpTest.options.length; i++) {
if (document.frmTest.drpTest.options.text.match(re)) {
setTimeout(&quot;document.frmTest.drpTest.selectedIndex = i&quot;, 50);
matched = true;
break;
}
}

if (!matched) {
testString = testString.replace(/.*(.)$/, &quot;$1&quot;
}
}
}

Programming today is a race between software engineers striving to build better and bigger idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. - Rick Cook (No, I'm not Rick)

 

[sharapov]

mwolf00,

Thank you for your help.
It works fine now.