来自javascript提示的回显变量[重复]

Question

This question already has an answer here:

• What is the difference between client-side and server-side programming? 5 answers

I am struggling to get the following code to work. I want to take input from a javascript prompt, and output it using a php echo. When I try this I get an echo with the random numbers "12313" for no apparent reason. This is my code:

echo '<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>'
   , '<script type="text/javascript">'
   , 'var code = prompt("Enter verification code", "");'
   , 'var getcode = code;'
   , '$.post("wp-members-register.php", { code: getcode }); </script>';

     $buffer_data['code'] = $_POST['code'];
    echo $buffer_data['code'];

I am very new to php so please bear with me. Perhaps I am not correctly posting the 'code' variable?

EDIT: Maybe somebody can show me a better way of inputting a text string and getting it in the php code to follow? Note I am working with the wp-members wordpress plugin in the wp-members-register.php file.

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Answer 1

Outputting javascript using PHP doesn't make any sense as javascript is a client side scripting which is executed after loading the DOM elements. PHP code is triggered when the request is sent from the browser to the server.