copytext.html

<!DOCTYPE html>
<html>
<body>
<div id="CopyText1" onclick="execClick();" oncopy="execCopy(event,'CopyText1');">直接复制文字</div>
<blockquote>
<p id="CopyText2">
通过点击按钮复制
</p>
<a onclick="execClick();" style="background-color:#f8a5c2;color:white;" oncopy="execCopy(event,'CopyText2');">复制</a>
</blockquote>
<script>
function execClick(){
    document.execCommand("copy");
}
function execCopy(event,CopyText){
    var thisDiv = document.getElementById(CopyText);
    if(isIE()){
        if(window.clipboardData){
            window.clipboardData.setData("Text", thisDiv.textContent);
            window.clipboardData.getData("Text");
            alert("复制成功da☆ze")
        }
    }else{
        event.preventDefault();
        if (event.clipboardData) {
            event.clipboardData.setData("text/plain", thisDiv.textContent);
            event.clipboardData.getData("text");
            alert("复制成功da☆ze")
        }
    }
}
function isIE(){
    var input = window.document.createElement ("input");
    if (window.ActiveXObject === undefined) return null;
    if (!window.XMLHttpRequest) return 6;
    if (!window.document.querySelector) return 7;
    if (!window.document.addEventListener) return 8;
    if (!window.atob) return 9;
    if (!input.dataset) return 10;
    return 11;
}
</script></body></html>