How to not run javascript if IE8 [duplicate]

Question

I have a search field validation that I do not ran if the browser is IE8.

Here's my javascript:

<script type="text/javascript">
    jQuery("#mini-search-form").submit(function() {
        var match =/[a-zA-Z0-9]+/.exec(jQuery('#mini-search-form #query').val());
      if(!match){
        alert("Please enter valid search words.");
        return false;
      }
      return true;
    });
</script>

I tried just surrounding that script with <![if !IE 8]> but Dreamweaver said that this was wrong.

Already answered: stackoverflow.com/questions/6763688/…

Cymen
– Cymen

2013-11-04 19:45:41 +00:00
Commented Nov 4, 2013 at 19:45 — Cymen
– Cymen, Commented Nov 4, 2013 at 19:45

Ruben Kazumov · Accepted Answer · 2013-11-04 19:55:05Z

2

<!--[if !IE 8]-->
<script>
    ...
</script>
<!--[endif]-->

answered Nov 4, 2013 at 19:55

Ruben Kazumov

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Comments

Alex · Accepted Answer · 2013-11-04 19:51:37Z

2

Selectively running code based off of the user's browser agent isn't best practice. Having said that below is crude solution:

if(window.navigator.userAgent.indexOf('MSIE 8') == -1){
    jQuery("#mini-search-form").submit(function() {
        var match =/[a-zA-Z0-9]+/.exec(jQuery('#mini-search-form #query').val());
        if(!match){
            alert("Please enter valid search words.");
            return false;
        }
        return true;
});

Feature Detection/Progressive Enhancement is a more preferred approach to cross-browser inconsistencies.

edited Nov 4, 2013 at 19:51

answered Nov 4, 2013 at 19:46

Alex

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Comments

The Alpha · Accepted Answer · 2013-11-04 20:20:39Z

0

You may try this but use feature detection instead of browser detection (if not only related to IE-8)

<!--[if !(IE 8)]><!-->
<script>
    jQuery(function(){
        jQuery("#mini-search-form").submit(function() {
            var match =/[a-zA-Z0-9]+/.exec(jQuery('#mini-search-form #query').val());
            if(!match){
                alert("Please enter valid search words.");
                return false;
            }
            return true;
        });
    });
</script>
<!--<![endif]-->

Read About conditional comments.

edited Nov 4, 2013 at 20:20

answered Nov 4, 2013 at 19:51

The Alpha

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1 Comment

The Alpha Over a year ago

Any reason for the down vote would let me know the difference.

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