百度编辑器失去焦点事件添加.js

var ue = UE.getEditor('content');  
ue.addListener("blur",function(){  
    var editor=UE.getEditor('content');  
    var arr =(UE.getEditor('content').getContentTxt());  
    var description = document.getElementById("description");//摘要id  
    description.value=arr.substring(0,180);  
})