javascript 检测用户代理 Firefox

Detecting User Agent Firefox

提问by user2062745

I'm pretty new to Javascript. What I've learned is from just playing around with code.

我对 Javascript 很陌生。我所学到的只是玩弄代码。

I'm having trouble getting this to load. Bascially I need a certain div to only show in Firefox. Here is what I have.

我无法加载它。基本上我需要一个特定的 div 才能只在 Firefox 中显示。这是我所拥有的。

<div id="parent" class="control-group"></div>

<script type="text/javascript">
        $(document).ready(function() {
        switch ( BrowserDetect.browser )
        {
        case 'Firefox':
            $("button[name='btn']").click(function() {
                $("#parent").html("<div></div>");
            });
        });
        break;
        }
</script>

回答by Samsquanch

You probably shouldn't be doing it like this, but if you are absolutely sure you only want to target Firefox:

您可能不应该这样做，但是如果您绝对确定只想针对 Firefox：

var browser = navigator.userAgent.toLowerCase();
if (browser.indexOf('firefox') > -1) {
    alert('Firefox');
}

fiddle

小提琴