[js] Text 값을 클립보드에 복사하기

입력 받은 text 값을 클립보드에 넣는 구문

function deliver(hawb){
    //var text = "Example text to appear on clipboard";	
    el = document.createElement('textarea');
    el.value = hawb;
    document.body.appendChild(el);
    el.select();
    document.execCommand('copy');
    document.body.removeChild(el);
    return false;
}

[참고] https://www.30secondsofcode.org/blog/s/copy-text-to-clipboard-with-javascript