underscore的Objects之has

 

   

/*
 @name has
 @param {Object} obj
 @param {String} key
 @info 检测对象是否含有指定的属性
 @return {Boolean} true or false
*/
_.has = function(obj,key){
      return Object.prototype.hasOwnProperty.call(obj,key);
}

 

 

    测试：

 

_.has({'name":"zhangyaochun"},"name"); //true

_.has({'name":"zhangyaochun"},"names"); //false