Use of javascript copy and paste and clipboardData_javascript skills

window.clipboardData can realize copy and paste operations, its getData method can realize data reading, and the setData method can realize data setting

 <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()">