<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.a {
100px;
height: 100px;
border: 1px solid;
}
img{
100px;
height: 100px;
border: 1px solid;
}
</style>
</head>
<body>
<a href="mailto:name@email.com">Email</a>
<div class="a"></div>
<input type="text" value="123123">
<button>dianwo</button>
<div id="testDiv" contenteditable="true"><b>123123</b>456 <img src="a.jpg" alt=""></div>
</body>
<script>
/**
* 问题1
* 粘贴无效
*/
document.querySelector('button').onclick = function () {
document.querySelector('input').focus()
document.execCommand("Paste","false",null);
console.log('执行粘贴')
}
/**
*
* 判断选中的内容（纯文本和html）是否为空，
*/
var testDiv = document.getElementById("testDiv");
testDiv.onmouseup = function(){
var selectionObj = null, rangeObj = null, selectedText = "", selectedHtml = "";
if(window.getSelection){
selectionObj = window.getSelection();
selectedText = selectionObj.toString();
rangeObj = selectionObj.getRangeAt(0);
var docFragment = rangeObj.cloneContents();
var tempDiv = document.createElement("div");
tempDiv.appendChild(docFragment);
selectedHtml = tempDiv.innerHTML;
}else if(document.selection){
selectionObj = document.selection;
rangeObj = selectionObj.createRange();
selectedText = rangeObj.text;
selectedHtml = rangeObj.htmlText;
}
alert(selectedText);
alert(selectedHtml);
};
</script>
</html>
参考内容：http://www.cnblogs.com/ArthurPatten/p/3317263.html