判断一个js对象是不是数组

function isArray(o) {  
  return Object.prototype.toString.call(o) === '[object Array]';   
}  

判断更多特殊类型：

var is = {  
    types : ["Array","RegExp","Date","Number","String","Object","HTMLDocument"]  
};  
for(var i=0,c;c=is.types[i++];){  
    is[c] = (function(type){  
        return function(obj){  
            return Object.prototype.toString.call(obj) == “[object "+type+"]“;  
        }  
    })(c);  
}  

评论

1 楼 luzitian 2011-12-11  

正好需要一个判断某对象是否Array的函数，受教了