keyUp on 4th Press

[tomyknoker]

I have a AJAX script which searches postcodes in my database to find the nearest store... Works really well... Initially the postcodes were 4 characters long but a few are actually 3 characters long, and the script only searches the database once the 4th key is pressed is there anyway to make it work on the 3rd key press AND the 4th? My code is as follows:

<script src="http://yui.yahooapis.com/2.2.2/build/yahoo-dom-event/yahoo-dom-event.js" type="text/javascript"></script>
<script src="http://yui.yahooapis.com/2.2.2/build/connection/connection-min.js" type="text/javascript"></script>
<script type="text/javascript">
var $D = YAHOO.util.Dom;     //YAHOO DOM
var $E = YAHOO.util.Event; //YAHOO Event
var $C = YAHOO.util.Connect; //YAHOO connection manager
 
function init() {
    $E.on('Code', 'keyup', chkZip);
	$E.on('findStore', 'submit', function(e) {$E.stopEvent(e);});
}
 
//See if code is fully entered (4 digits)
function chkZip(e) {
    var postCode = $E.getTarget(e).value;
    if(postCode.length < 4) return; //Ignore if not complete
    
    var storeSpan = document.getElementById('store'); //Element to put store name into
    var AjaxObj = {
        success: function(o) {
            storeSpan.innerHTML = o.responseText;
        },
        failure: function(o) {
            storeSpan.innerHTML = "<em>Error - Please try again</em>";
        },
        timeout: 5000
    }
    $C.asyncRequest('GET', 'findMyRep.php?postCode=' + encodeURIComponent(postCode), AjaxObj);
            
}
$E.onDOMReady(init);
</script>

[PremiumBlend]

Can you replace

if(postCode.length < 4) return; //Ignore if not complete

with

if(postCode.length != 3 || postCode.length != 4) return;

[glenngv]

Originally Posted by PremiumBlend

Can you replace

if(postCode.length < 4) return; //Ignore if not complete

with

if(postCode.length != 3 || postCode.length != 4) return;

Condition should be AND not OR, otherwise, length of 3 or 4 will always satisfy one of the conditions.

if(postCode.length != 3 && postCode.length != 4) return;