JS过滤emoji

function filterEmoji(text){
    var ranges = [
            '\ud83c[\udf00-\udfff]', 
            '\ud83d[\udc00-\ude4f]', 
            '\ud83d[\ude80-\udeff]'
        ];
    return text.replace(new RegExp(ranges.join('|'), 'g'), '');
}