Problem with is_page() conditional in WordPress

can someone tell me why th开发者_开发问答is code doesn't work? The is_page() is not in effect.

function tao_scripts() {
if (!is_admin()) {


    wp_deregister_script('jquery');
    wp_register_script('jquery', get_template_directory_uri() . '/js/jquery-1.4.2.min.js', false, '1.4.2');
    wp_enqueue_script('jquery');

    if ( is_page() ) {
        wp_register_script('jquery-validate', get_template_directory_uri() . '/js/jquery.validate.min.js', 'jquery', '1.7');
        wp_enqueue_script('jquery-validate');
    }       
  }
}
add_action('init', 'tao_scripts');

The code is in a php file which is included i my functions.php.

I have tried all I could find/think of. Without the is_page() conditional it works. I have tried with wp_reset_query(), no help. Im sure wordpress knows its a page. is_page(34, 'name', 'Name') wont help either.

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It is to do with the order of actions

add_action('init', 'tao_scripts');

this action occurs way before the query object is extracted

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Technically, Torok is wrong. is_page works perfectly fine outside the loop. I imagine it's not working because you're not using wp_register_script correctly. The dependencies need to be an array:

wp_register_script('jquery-validate', get_template_directory_uri() . '/js/jquery.validate.min.js', array('jquery'), '1.7');

That should do it.

EDIT:

As TheDeadMedic pointed out, you should also hook this on a later hook. The earliest one you should use is wp. I'd actually suggest using template_redirect, since that will only run if you're on the front end (unless you want to replace jQuery on the back end too).

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Can you try to test your function with specific page:

if ( is_page(34, 'name', 'Name') ) 
{
    // your code here
}