打印DIV内容的最佳方法是什么?


当前回答

下面是一个适用于IE和Chrome的IFrame解决方案:

function printHTML(htmlString) {
    var newIframe = document.createElement('iframe');
    newIframe.width = '1px';
    newIframe.height = '1px';
    newIframe.src = 'about:blank';

    // for IE wait for the IFrame to load so we can access contentWindow.document.body
    newIframe.onload = function() {
        var script_tag = newIframe.contentWindow.document.createElement("script");
        script_tag.type = "text/javascript";
        var script = newIframe.contentWindow.document.createTextNode('function Print(){ window.focus(); window.print(); }');
        script_tag.appendChild(script);

        newIframe.contentWindow.document.body.innerHTML = htmlString;
        newIframe.contentWindow.document.body.appendChild(script_tag);

        // for chrome, a timeout for loading large amounts of content
        setTimeout(function() {
            newIframe.contentWindow.Print();
            newIframe.contentWindow.document.body.removeChild(script_tag);
            newIframe.parentElement.removeChild(newIframe);
        }, 200);
    };
    document.body.appendChild(newIframe);
}

其他回答

从这里https://forums.asp.net/t/1261525.aspx

<html> 
<head>
    <script language="javascript">
        function printdiv(printpage) {
            var headstr = "<html><head><title></title></head><body>";
            var footstr = "</body>";
            var newstr = document.all.item(printpage).innerHTML;
            var oldstr = document.body.innerHTML;
            document.body.innerHTML = headstr + newstr + footstr;
            window.print();
            document.body.innerHTML = oldstr;
            return false;
        }
    </script>

    <title>div print</title>

</head>

<body>
    //HTML Page //Other content you wouldn't like to print
    <input name="b_print" type="button" class="ipt" onClick="printdiv('div_print');" value=" Print ">

    <div id="div_print">
        <h1 style="Color:Red">The Div content which you want to print</h1>
    </div>
    //Other content you wouldn't like to print //Other content you wouldn't like to print
</body>    
</html>

在Opera中,试试:

    print_win.document.write('</body></html>');
    print_win.document.close(); // This bit is important
    print_win.print();
    print_win.close();

我认为有更好的解决办法。让你的div打印覆盖整个文档,但只在打印时:

@media print {
    .myDivToPrint {
        background-color: white;
        height: 100%;
        width: 100%;
        position: fixed;
        top: 0;
        left: 0;
        margin: 0;
        padding: 15px;
        font-size: 14px;
        line-height: 18px;
    }
}

最好的方法是将div的内容提交给服务器,并打开一个新窗口,服务器可以将这些内容放入新窗口中。

如果这不是一个选项,你可以尝试使用客户端语言,如javascript隐藏页面上的所有内容,除了div,然后打印页面…

将Element传递给这个函数打印:

函数printElm(elm) { var orig = document.body.innerHTML; document.body.innerHTML = elm.outerHTML; print (); document.body.innerHTML = origin; }