js一鍵復制功能、幾乎兼容所有瀏覽器

 

html內容

<div hidden id="keydiv">Hello World</div>

<btn class="btn btn-sm btn-default" onclick="copyText()">點此復制</btn>

js代碼

function copyText() {
var Url2 = document.getElementById("keydiv").innerText;
var oInput = document.createElement('input');
oInput.value = Url2;
document.body.appendChild(oInput);
oInput.select();
document.execCommand("Copy");
oInput.className = 'oInput';
oInput.style.display = 'none';
alert('復制成功');
}