js实现复制粘贴功能

复制/粘帖功能我们几乎天天在用。可是大家知道他是怎么实现的吗?(它的实现网上很多。查来看看)

js :最基本的文本复制:

  <script language="javascript">

  function readTxt()

  {

  alert(window.clipboardData.getData("text"));

  }

  function setTxt()

  {

  var t=document.getElementById("txt");

  t.select();

  window.clipboardData.setData('text',t.createTextRange().text);

  }

  </script>

  <input name="txt" value="测试">

  <input type="button" value="复制" onclick="setTxt()">

  <input type="button" value="读取" onclick="readTxt()">

 

 

------------------------------------

 

 

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@page import="com.web.util.Tools"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 <head>
  <title>测试复制粘帖</title>
  <meta http-equiv="pragma" content="no-cache">
  <meta http-equiv="cache-control" content="no-cache">
  <meta http-equiv="expires" content="0">
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="This is my page">
  <script type="text/javascript" src="../js/lib/jquery-1.8.3.min.js"></script>
  <script language="javascript">
     $(function(){
    $("#copy").click(function(){
      var t=$("#txt").val();
       window.clipboardData.setData('text',t);
    })
    $("#read").click(function(){
     $("#txt1").val(window.clipboardData.getData("text"));
     })
     })
 
  </script>

 
</head>
<body>
 <input name="txt" id="txt" value="测试" width="200px">
  <input type="button" value="复制" id="copy"">
  <input type="button" value="粘贴" id="read"">
 
 
 <input name="txt1" id="txt1" width="200px">
 
</body>
</html>

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