noscript | 易学教程

Valid way to add noscript in head for wrapping redirect

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问题 So I was thinking a simple way to deal with javascript being disabled by the browser would be the following: <head> <title>JavaScript Test</title> <noscript> <meta http-equiv="Refresh" content="1;url=nojs.html" /> </noscript> </head> And having the nojs.html have something like: <p>Return to <a href="jstest.html">test</a> after enabling javascrpt.</p> At the crash page. This isn't my preferred method, but it's nice and simple until something more graceful can be worked out for users without

How can I prevent a page from loading if there is no javascript, but using php instead of <noscript>?

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问题 I have a page with php and other stuff in the code. What I need to do is a way to check with php if there is javascript enabled in the browser. This way, the whole page source will be prevented to be loaded, instead of using that only prevents the page from loading, but allows the source code. 回答1: PHP is a server-side language. There is no way to do this with PHP since it is run on the server, and then the result is sent to the client. The server has no knowledge of whether the client has

Body styling for a noscript tag?

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问题 If no JavaScript is enabled, I want my body to have overflow:hidden (no scrollbars). How can I solve this? Is it possible to use a noscript tag inside of <head> and set specific styles inside of it? 回答1: I'm pretty sure <noscript> <style type="text/css"> body { overflow:hidden; } </style> </noscript> in your <head> would do the job. But as stated in the other post, it may be better to use CSS for this purpose, and enable overflow for browsers with JavaScript. 回答2: If you mean the <body> of

Errors validation W3C HTML5 img noscript facebook.com

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问题 I am trying to validate my page as HTML 5 (W3c). And I have the following error: The "img" element is not allowed here (as a child of the "noscript" element). The "noscript" element, when a child of "head", must contain only the following child elements: "link", "style", and "meta". On site https://developers.facebook.com/docs/ads-for-websites/conversion-pixel-code-migration recommendation for my code: "Copy and paste the upgraded code snippet between <head> ; and </head> ; in the HTML code

Errors validation W3C HTML5 img noscript facebook.com

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Does noscript content load in bg

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问题 Does the html tag noscript load the content in the background, even when javascript is enabled? I have a random image that is called by JS each time the pageloads, but I would like all of the links (not just the current random one) to be crawled. At the same time, I don't want the pageload to slow down because images are loading in the background like they do with display:none. I also want to call these images and links in the html because of CMS reference issues with Javascript. 回答1: Image

PHP: How to scrape content of the website based on Javascript

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问题 I'm trying to get content of this website using PHP simplehtmldom library. http://www.immigration.govt.nz/migrant/stream/work/workingholiday/czechwhs.htm" It is not working, so i tried using CURL: function curl_get_file_contents($URL) { $c = curl_init(); curl_setopt($c, CURLOPT_RETURNTRANSFER, 1); curl_setopt($c, CURLOPT_URL, $URL); $contents = curl_exec($c); curl_close($c); if ($contents) return $contents; else return FALSE; } But always get only respose with some JS code and content:

Shouldn't we use <noscript> element?

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问题 I found some good cons here: The noscript element only detects whether the browser has JavaScript enabled or not. If JavaScript is disabled in the Firewall rather than in the browser then the JavaScript will not run and the content of the noscript element will not be displayed. Many scripts are dependent on a specific feature or features of the language being supported in order for them to be able to run (for example document.getElementById). Where the required features are not supported the

Asp.Net - Detect no javascript on page? (renamed title)

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问题 I have a page that displays all its content in a TabContainer, but if javascript is disabled on the browser it just displays a blank page. I can add a <noscript> to display all the important content, but the blank TabContainer still renders. I'd like to add a in the header to redirect to the same page plus ?noscript=true, but it shouldn't be infinite. I figure using a PlaceHolder control that will put the appropriate <META HTTP-EQUIV="Refresh" CONTENT="0; URL=url?noscript=true"> when the

How to hide parts of HTML when JavaScript is disabled?

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问题 I'm trying to accommodate users without JavaScript. (By the way, is it worth the effort nowadays?) In one HTML file I'd like part of it execute if scripts are on , and another part if scripts are OFF. The <noscript> tag lets me do the former, but how to achieve the latter? How can I mark a part of HTML so that it is not parsed by browser if scripts are off ? 回答1: here's a video tutorial on how this can be done with jQuery: http://screenr.com/ya7 Code: <body class="noscript"> <script> $('body'