There’s a minor different how to set selected item in drop down list in jQuery Mobile. We can’t set by using standard jQuery $().val(value);. Here the workaround Reference: Is there a way to set the selected value in JQM select?
Create a composer.json in project root directory and copy paste the following composer configuration. Then run composer install. Once done, copy wp/index.php to project root directory and update require( dirname( __FILE__ ) . ‘/wp-blog-header.php’ ); to require( dirname( __FILE__ ) . ‘/wp/wp-blog-header.php’ );. Now run the WP at http://localhost/wp-project-root and continue with installation and you’re done. References: Using Composer With WordPress Composer in WordPress Giving WordPress It’s Own Directory