var arr:Array = ["a","b","c","d","e","f","g"];

arr.splice(删除点的索引,要删除的个数,新元素1,新元素2);

arr.splice(2,3,"o","p","q");//从索引为2开始，删除3个元素，并插入3个新元素"o","p","q"

arr.splice(-2,3,"o","p","q");//从倒数为2的索引开始，删除3个元素，并插入3个新元素"o","p","q"

arr.splice(2,3);//cuplayer.com提示：单纯的删除从索引2开始的3个元素(不插入)

arr.splice(2);//cuplayer.com提示：单纯的删除从索引2开始的所有元素(不插入)

arr.splice(2,0,"x","y","z");//在索引2的后面插入3个新元素(不删除)

var arr:Array = ["a","b","c","d","e","f","g"];

var newArr:Array = arr.slice();//浅复制数组

var newArr:Array = arr.slice(2);

var newArr:Array = arr.slice(-2);

var newArr:Array = arr.slice(2,5);