Auto fill author data in WordPress importer. Very useful for sites with many authors. Note: Should be run from the browser console when on the import-author page.

autofill-wp-importer.js

var authors_import = jQuery( '#authors li' );
 
authors_import.each( function() {
 
  var name_data = jQuery( this ).find( 'strong' ).html();
 
	var username, nicename;
 
	username = name_data.substring( name_data.indexOf( '(' ) + 1, name_data.indexOf( ')' ) );
 
	nicename = name_data.substring( 0, name_data.indexOf( '(' ) - 1 );

	username.toLowerCase();

	nicename.toLowerCase();
 
	jQuery( this ).find( 'div select option' ).each( function() {
 
		var option = jQuery( this ).html();
 
		if( option.indexOf( username.substring( 2, 8 ) ) > 0 || option.indexOf( nicename.substring( 2, 6 ) ) > 0 ) {
			jQuery( this ).attr( 'selected', 'selected' );
		}
 
	});
});