自定义一个不知如何:
var o = { a : new Object(), b : new Object(), length : 2 };
o.add = function(name,obj){
var len = o.length+1;
delete o.length;
o[name] = obj;
o["length"] = len;
}
o.remove = function(name){
delete o[name];
o.length--;
}
var o = { a : new Object(), b : new Object(), length : 2 };
o.add = function(name,obj){
var len = o.length+1;
delete o.length;
o[name] = obj;
o["length"] = len;
}
o.remove = function(name){
delete o[name];
o.length--;
}
可行,
顶一下,