Javascript 传递到window.prompt的文本将替换为“…”&引用；

我想允许用户复制大量的电子邮件地址到他们的剪贴板。这个答案似乎是最可靠的方法：

但是，在测试时，我发现

window.prompt（）

总是将其中一封电子邮件的一部分替换为

…

以下是测试数据：

test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com; test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;

window.prompt ("To copy emails to clipboard, press: Ctrl+C, then Enter", 
  "test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com; test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;");

下面是具有以下测试数据的示例代码：

test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com; test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
test@test.com;test@test.com;

window.prompt ("To copy emails to clipboard, press: Ctrl+C, then Enter", 
  "test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com; test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;test@test.com;test@test.com;test@test.com;
  test@test.com;test@test.com;");

JSFiddle：

单击上面的链接，将文本复制并粘贴到文本编辑器中，您将看到其中一封电子邮件（大约一半）变成：

为什么会发生这种情况？

window.prompt（）函数在Chromium中限制为2000个字符。如果输入字符串超过这个限制（您的示例有2059个字符），则输入字符串在中间用点标记。这被称为一个

下面是一个使用2000个字符的演示（我用XXX替换了最后三个字符）：

---

提示的字符限制似乎是MVP所说的原因。 有一个更好的解决办法。 使用电子邮件文本作为其内容的

textarea

，并使用

select

功能在textarea中选择整个文本，就像您在提示中所做的那样

例如：

$('#container').append('To copy emails to clipboard, press: Ctrl+C, then Enter <br />
<textarea id="emailsToCopy">'+emailsToCopy+'</textarea>');
$('#emailsToCopy').select().focus();

---

如果我有更多的声望点，我会评论吉特什的回答

如果不使用jquery，则无法执行以下操作：

emailsTxtArea.select().focus();

相反，您必须这样做：

emailsTxtArea.select();
emailsTxtArea.focus();

---

在常规javascript中，select方法不会返回对象。

您使用的是哪种浏览器？工作模式。我可以用Chrome重新编程。在Chrome 28，OSX 10.7上对我有效。但是如果它在某些浏览器中不起作用，您将不得不使用自己的自制模式和文本区域。@bfavaretto我认为这是首选的方式！这在IE中运行良好，似乎只是Chrome中的一个问题？

emailsTxtArea.select();
emailsTxtArea.focus();