11

我正在创建一个 Phonegap 应用程序，该应用程序要求用户选择p元素内的文本，然后“复制”修改它以满足我需要的文本。

但是，在p标签内选择文本时会出现问题。文本是从我的服务器中检索出来的，输出如下：

<p style="white-space:pre-wrap">Proin quis tortor orci. Etiam at risus et justo dignissim congue. Donec congue lacinia dui, a porttitor lectus condimentum laoreet. Nunc eu ullamcorper orci. Quisque eget odio ac lectus 


vestibulum faucibus eget in metus. In pellentesque faucibus vestibulum. Nulla at nulla justo, eget luctus tortor. Nulla facilisi. 

Duis aliquet egestas purus in blandit. Curabitur vulputate, ligula lacinia scelerisque tempor, lacus lacus ornare ante, ac egestas est urna sit amet arcu. Class aptent taciti sociosqu ad litora
</p>

这将使文本在我不使用标签的情况下保留换行符<br/>，这些标签目前在我的 Javascript 中不起作用。

无论如何，当您尝试在此元素中选择文本时，会选择整个p元素。这是当您选择一个单词时发生的转换，然后移动边界以选择更多文本：

在此处输入图像描述

注意：第一个序列中的文字不同，因为我用不同的文字截取了屏幕截图，但效果还是一样的。

我无法为此提供 jsFiddle，因为它似乎只在 Phonegap 中复制，但我已经上传了我的源代码进行测试：http ://cl.ly/2w0O1d3l3h17

项目中没有 JS，但是 HTML 和 CSS 是这样的：

HTML：

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <meta name="format-detection" content="telephone=no" />
        <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1"/>
        <link rel="stylesheet" type="text/css" href="css/index.css" />
        <title>Hello World</title>
        <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js" type="text/javascript"></script>
        <script type="text/javascript" src="cordova-2.5.0.js"></script>
        <script type="text/javascript" src="js/index.js"></script>
        <script type="text/javascript">
            app.initialize();
        </script>
    </head>
    <body>
        <p class="text">Adobe Acrobat Test Page
        Acrobat Reader is properly installed.
        Click here to go back to information about using PDF.

        Guidance for Using PDF Documents

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        </p>
    </body>
</html>

CSS：

.text{
    white-space:pre-wrap;
    word-wrap: break-word;
    height:300px;
    overflow: scroll;
    -webkit-overflow-scrolling: touch;
    padding:10px;
    border:1px solid #000;
    background-color:#fff;
}

我发现的一种潜在解决方案是contenteditable="true"在p元素上使用，但这有一些缺点：

  1. 我不能允许在元素中创建更多标签
  2. 我无法显示键盘

我发现的另一个解决方案是删除pre格式。但是，这会删除我希望保留的换行符。

4

2 回答 2

7

您的问题是 iOS 的本机选择引擎选择单独的单词或整个元素。并且因为您有一个<p>元素保存整个文本，所以<p>当您尝试选择多行时，本机选择引擎会选择整个元素。您应该做的是“提示”您希望能够选择多行的选择引擎。例如，您可以通过将每一行文本放入单独的块级元素中来实现这一点<div>。

这是一个示例脚本，它解析元素内的文本<p class="text">并将每行文本放入单独的元素中，通过使用不间断空格字符实体<div>在每行的开头保留新行、空行和空格。

var textElm = document.getElementsByClassName("text")[0],
    text = textElm.textContent,
    html = "";

html = text.replace(/([\t ]*)(.*)\n/g, function(match, spaces, text) {
    if (spaces === "" && text === "") spaces = " "; // Make sure empty lines are rendered by adding single &nbsp; to <div>
    return "<div>" + Array(spaces.length + 1).join("&nbsp;") + text + "</div>"
});

textElm.innerHTML = html;

在此处输入图像描述

然后您也可以white-space:pre-wrap;从不再需要的 CSS 中删除它。

于 2013-03-25T09:53:26.733 回答
0

解决这个问题的方法是将整个内容放在p标签或任何东西中，然后将通常由 a 分隔的每个段落分开，<br />并使用看起来像这样的人造换行符：

<a class="space"></a>

它可以是任何通常的内联元素，然后我们将给它以下 CSS：

.space{
    display:inline-block;
    height:15px;
    width:100%;
}
于 2013-04-04T02:41:06.227 回答