JS 将字符串复制到剪切板

function copyText(text){
    var input = document.createElement('input');
    input.setAttribute('id', 'input_for_copyText');
    input.value = text;
    document.getElementsByTagName('body')[0].appendChild(input);
    document.getElementById('input_for_copyText').select();
    document.execCommand('copy');
    document.getElementById('input_for_copyText').remove();
}