jquery 实现可编辑div

<ol id="ol_group" class="list-group list_of_items">
<li class="list-group-item completed_item">
<div class="text_holder">
how are you?
<div class="btn-group pull-right">
<button class="delete btn btn-warning">Delete</button>
<button class="edit btn btn-success">Edit</button>
</div>
</div>
<div class="checkbox">
<label>
<input type="checkbox" class="pull-right">
</label>
</div>
</li>
</ol>

body.on('click', '.text_holder .btn-group .edit', function(){
var divedit = $(this).parent().parent();
if (!divedit){
return;
}
if (divedit.children("input").length > 0) {
return;
}
var mtext = divedit.text().substring(0, divedit.text().length-10);

var inputIns = $("<input type='text'/>");  //创建input 输入框
var oldtext = divedit.html();        //保存原有的值
inputIns.width(divedit.width()/3*2); //设置INPUT与DIV宽度一致
inputIns.val(mtext);
divedit.html(""); //删除原来单元格DIV内容
inputIns.appendTo(divedit).focus().select(); //将需要插入的输入框代码插入DOM节点中
inputIns.click(function () {
return false;
});
//处理回车和ESC事件
inputIns.keyup(function (event) {
var keycode = event.which;
if (keycode == 13) {
var newText = oldtext.replace(mtext, $(this).val());
divedit.html(newText);         //设置新值
}
if (keycode == 27) {
divedit.html(oldtext);         //返回旧值
}
}).blur( function (event) {
if($(this).val() != oldtext){
var newText = oldtext.replace(mtext, $(this).val());
divedit.html(newText);         //设置新值
}else{
divedit.html(oldtext);
}
}
);
});