JavaScript implements for `native2ascii`

native2ascii.js

/**
 * javascript implements for `native2ascii`
 * 
 * @file native2ascii
 * @author zfkun(zfkun@msn.com)
 */

/**
 * pattern 1
 * 
 * @param {string} str
 * @return {string}
 */
function native2ascii( str ) {
    return unescape( escape( str + '' ).replace( /%(?=u[\da-z]{4})/gi, '\\' ) );
}

/**
 * pattern 2
 * 
 * @param {string} str
 * @return {string}
 */
/*
function native2ascii(str) {
    return ( str + '' ).replace(
        /[^\x00-\xff]/g,
        function ( char ) {
            return escape( char ).replace( /\%/, '\\' );
        }
    );
}
*/