Question

I have page which created dynamically.

Now I want to add ajax function, so I want to add if statement to change the outputs.

if(js is on){
 ...
 ... 
 echo "js is on";
}else{
...
echo "js is off";
}

Is there any way I can detect if js is on with php?

Or is there any way I can remove/hide it by jquery?

Thanks in advance.

Answer 1

PHP is executed before any browser action takes place, so no, PHP cannot directly detect whether the user has Javascript on or off.

You must provide a bit more info on what you’re doing for us to find you a workaround. In PHP, it is possible to detect whether the call was made via AJAX or not using the $_SERVER['X_HTTP_REQUESTED_WITH'] global variable which jQuery will set automatically.

If you need to show an element when Javascript is enabled, you can first hide the element with CSS and enable it with Javascript/jQuery. The same goes the other way around also.