语法 - 将html属性添加到下拉类别

Question

I am new to PHP and Wordpress. I have the following code in one of my plugin file. It is used to generate a drop down for categories. I want to add an html attribute to it. I want to add the html attribute "autofocus" to it so that when the page load this select box has focus by default.

<?php  

    wp_dropdown_categories( array( 

        'name'          => 'question-category',

        'id'            => 'question-category',

        'taxonomy'      => 'dwqa-question_category',

        'show_option_none' => __('Select a question category','dwqa'),

        'hide_empty'    => 0,

        'quicktags'     => array( 'buttons' => 'strong,em,link,block,del,ins,img,ul,ol,li,code,spell,close' ),            

    ) );

?>

I am having problem with the syntax in which this should be added.

Answer 1

your best bet is going to be to set the echo attribute to false and then find and replace parts of the html that is returned.

<?php  

    $questioncategory = wp_dropdown_categories( array( 

        'echo'     => false,

        'name'          => 'question-category',

        'id'            => 'question-category',

        'taxonomy'      => 'dwqa-question_category',

        'show_option_none' => __('Select a question category','dwqa'),

        'hide_empty'    => 0,

        'quicktags'     => array( 'buttons' => 'strong,em,link,block,del,ins,img,ul,ol,li,code,spell,close' ),            

    ) );

    $questioncategory = str_replace('<select', '<select autofocus', $questioncategory);
    echo $questioncategory;

?>