제목 내용을 가져가서 구글, 파파고 번역하기

<div class="input-group input-group-sm">
<span class="input-group-addon">제목</span>
<input type="text" name="sub_ex" id="sub_ex" value="" class="form-control input-sm" size="80" maxlength="255">
<span class="input-group-btn">
<a onClick="javascript: translateTitleGoogle();" target="_blank" class="btn btn-blue btn-sm">구글</a>
<a onClick="javascript: translateTitlePapago();" target="_blank" class="btn btn-green btn-sm">파파고</a>
</span>
</div>

<script>
function translateTitleGoogle() {
    if ("#sub_ex" == '') {
        return;
    }
    var url = 'https://translate.google.com/#auto|ko|' + encodeURI("#sub_ex");
    window.open(url, 'translate_google');
}

function translateTitlePapago() {
    if ("#sub_ex" == '') {
        return;
    }
    var url = 'https://papago.naver.com/?sk=auto&tk=ko&hn=0&st=' + encodeURI("#sub_ex");
    window.open(url, 'translate_papago');
}
</script>