Why does adding id="ad_a" to a HTML element sometimes make it invisible in Chrome and Firefox?
I bring to you a simple snippet of HTML:
<HTML>
<HEAD></HEAD>
<BODY>
<div id="ad_a">
test DIV
</div>
test BODY
</BODY>
</HTML>
Yeah, there's no doctype or what have you, but none of that seems to matter for this strange behavior.
Can anybody please tell开发者_如何转开发 me why calling my div id="ad_(ANYTHING HERE)" hides everything inside this div? it just.. disappears.. It shows up in the page source but it doesn't show up on the loaded page..
I first noticed this in Google Chrome. Firefox seems to ignore it (for me at least, but my friend says it happens in his FF) my Internet Explorer 9 also ignores this div name and shows its content on the page.
What is going on and why does it do this?
Is this a commonly used thing? If so, what does it do?
(Posting comment as answer at OP's request)
I'm going out on a limb here, but could an ad-blocking extension be interpreting the ad_ prefix as an advertisement and hiding it? I just ran the code in Chrome with all extensions disabled and it shows up as intended
加载中,请稍侯......
精彩评论