js复制文本到粘贴板(Clipboard.writeText())

    //创建选中范围
    var range = document.createRange();
    range.selectnode(copyDom);
    //移除剪切板中内容
    window.getSelection().removeAllRanges();
    //添加新的内容到剪切板
    window.getSelection().addRange(range);
    //复制
    var successful = document.execCommand('copy');

$('#btnCopy').bind('click', function (e) {
    if (!$.isEmptyObject(codeData)) {
        //support IE
        var clipboardData = window.clipboardData;
        //support Chrome/Firefox
        if (!clipboardData) {
            clipboardData = e.originalEvent.clipboardData;
        }
        if (!clipboardData) {
            console.log(clipboardData);
            console.log(clipboardData.getData('text'));
            clipboardData.setData('Text', codeData[id]);
        }
        if(window != undefined){
           window.copy($("#genCodeArea").val());
        }
    }
});

<script src="//cdn.staticfile.org/clipboard.js/2.0.4/clipboard.min.js"></script>

<!-- Target -->
<input id="copyArea" value="https://zhengkai.blog.csdn.net">
<!-- Trigger -->
<button class="btn" data-clipboard-target="#copyArea">
    <img src="assets/clippy.svg" alt="Copy to clipboard">
</button>

$('#btnCopy').on('click', function(){
     if(!$.isEmptyObject(genCodeArea.getValue())&&!$.isEmptyObject(navigator)&&!$.isEmptyObject(navigator.clipboard)){
         navigator.clipboard.writeText(genCodeArea.getValue());
         layer.msg("复制成功");
     }
 });

<button onclick="copyToClip('内容')"> Copy </button>

function copyToClip(content, message) {
    var aux = document.createElement("input"); 
    aux.setAttribute("value", content); 
    document.body.appendChild(aux); 
    aux.select();
    document.execCommand("copy"); 
    document.body.removeChild(aux);
    if (message == null) {
        alert("复制成功");
    } else{
        alert(message);
    }
}

function copyToClip(contentArray, message) {
    var contents = "";
    for (var i = 0; i < contentArray.length; i++) {
        contents += contentArray[i] + "\n";
    }
    const textarea = document.createElement('textarea');
    textarea.value = contents;
    document.body.appendChild(textarea);
    textarea.select();
    if (document.execCommand('copy')) {
        document.execCommand('copy');
    }
    document.body.removeChild(textarea);
    if (message == null) {
        alert("复制成功");
    } else{
        alert(message);
    }
}