55128.cn_kjh.55128.cn_m.55128.cn/CP55128/CB.Wap/static/js/copy.js

document.getElementById("copyButton").addEventListener("click", function ()
{
    copyToClipboard();
});

function copyToClipboard() {
    var elem = document.getElementById("numValue");
    // create hidden text element, if it doesn't already exist
    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.textContent = elem.textContent;
    }
    // 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 = "";
    }
    alert("复制成功!");
    return succeed;

}