javascript:复制到剪贴板会导致跳转到页面顶部(不涉及锚标记!)

这里有几个问题: 1-向函数提交HTML内容,而它需要一个DOM元素。 2-您将该文本区域添加到页面顶部,这样浏览器将向上滚动以获得焦点。

解决方案: 1 -删除 .html() 从 copyToClipboard() 在函数的开头创建一个变量 2-将该文本区域添加到单击的元素中,这样浏览器就不会滚动离开它。

记住,一旦使用了隐藏字段,就要将其删除。

下面的javascript代码

    jQuery(".item").click(function () {
        var success = copyToClipboard(jQuery(this));
        if (success) jQuery(this).fadeOut(100).fadeIn(100);
    });

function copyToClipboard(elem) {
    // create hidden text element, if it doesn't already exist
    var copyText = elem.html();
    var targetId = "_hiddenCopyText_";
    var isInput = elem.tagName === "INPUT" || elem.tagName === "TEXTAREA";
    var origSelectionStart, origSelectionEnd;
    if (isInput) {
        // can just use the original source element for the selection and copy
        target = elem;
        origSelectionStart = elem.selectionStart;
        origSelectionEnd = elem.selectionEnd;
    } else {
        // must use a temporary form element for the selection and copy
        target = document.getElementById(targetId);
        if (!target) {
            var target = document.createElement("textarea");
            /*target.style.position = "absolute";
            target.style.left = "-9999px";
            target.style.top = "0";
            target.id = targetId;
            document.body.appendChild(target);*/
            target.style.opacity = 0;
            elem.append(target);
        }
        if(typeof elem == "string") target.textContent = elem;
        else target.textContent = elem.text();
    }
    // select the content
    var currentFocus = document.activeElement;
    target.focus();
    target.setSelectionRange(0, target.value.length);

    // copy the selection
    var succeed;
    try {
        succeed = document.execCommand("copy");
    } catch(e) {
        succeed = false;
    }
    // restore original focus
    if (currentFocus && typeof currentFocus.focus === "function") {
        currentFocus.focus();
    }

    if (isInput) {
        // restore prior selection
        elem.setSelectionRange(origSelectionStart, origSelectionEnd);
    } else {
        // clear temporary content
        target.textContent = "";
    }
    target.remove();
    return succeed;
}

看看这是不是你想要的: https://jsfiddle.net/yjvstazu

边注 :这在iOS上不起作用。您需要使输入/文本区域内容可编辑。在代码中添加如下内容:

if (navigator.userAgent.match(/ipad|ipod|iphone/i)) {
        target.contentEditable = true;
        target.readOnly = true;
        var range = document.createRange();
        range.selectNodeContents(target);
        var selection = window.getSelection();
        selection.removeAllRanges();
        selection.addRange(range);
        target.setSelectionRange(0, 999999);
    } else {
        target.select();
    }