PHP & <noscript> combination to detect enabled JavaScript in browser
Is this correct? If not what is the correct syntax
I am new to php hence trying to learn.
<?php
// Check browser for JavaScript support
$jsSupport='true'; ?>
<noscript><?php $jsSupport='false'; ?></noscript>
<?php
if ($jsSupport == 'false') {
include ('no-script-layout.php');
} else {
include ('regular-layout.php');
}
?>
Or is there a better way to handle this?
<noscript> tags
You can use the noscript tags to display content to browsers with javascript disabled or redirect them to another page (a nojs-version.php for example).
<!-- Redirect to another page (for no-js support) (place it in your <head>) -->
<noscript><meta http-equiv="refresh" content="0;url=nojs-version.php"></noscript>
<!-- Show a message -->
<noscript>You don't have javascript enabled! Please download Google Chrome!</noscript>
Modernizr
The better way to handle javascript detection (& feature) would be to use Modernizr: http://modernizr.com
Check out this SO question: What is the purpose of the HTML "no-js" class?
A basic example (without Modernizr)
You could add the class no-js on page load to your <body> tag. Then when the page loads and if javascript is enabled, you can replace the no-js with js like so:
// When the DOM is ready & loaded, do this..
$(document).ready(function(){
// Remove the `no-js` and add the `js` (because JS is enabled (we're using it!)
$('body').removeClass('no-js').addClass('js');
// Assign it to a var so you don't traverse the DOM unnecessarily.
var useJS = $('body').hasClass('js');
if(useJS){
// JS Enabled
}
});
The above code is a very basic example of how modernizr works. I would highly recommend just using that.
Check out Modernizr
要做到这一点（如果你真的需要从PHP知道用户是否启用了JS）：
<script>
// AJAX call to your PHP script to tell it that JS is enabled
</script>
No that is not correct. All code is interpreted, and why are you using string literals instead of actual booleans? And not to mention, you're using an assignment operator instead of a comparison operator in your if statement.
链接地址: http://www.djcxy.com/p/96876.html上一篇: 防止加载禁用js的页面