作者：Super-Tomato
原文：http://www2.flash8.net/teach/2913.htm
不知道可否有人试过复制多维数组变量后，修改原来的数组变量，而拷贝的变量值也一起更换呢？
如：
var myArray:Array = new Array([1,2]);
var temp:Array = myArray;
myArray[0][0] = 3;
trace(myArray); //3,2
trace(temp); //没更动但却输出3,2
而经过测试之后，在一维数组却没有问题。所以从此处写出修正的方法
Array.prototype.duplicate = function(){
var a = [];
for (var i in this) (this[i] instanceof Array) ? a[i] = this[i].slice() : a[i] = this[i];
return a;
}
var myArray:Array = new Array();
myArray[0]=[1,2]
myArray[1]=3
myArray[2]=[5,6]
var temp:Array = myArray.duplicate();
trace(myArray); //1,2,3,5,6
trace(temp); //1,2,3,5,6
myArray[0][0] = 5;
trace(myArray); //5,2,3,5,6
trace(temp); //1,2,3,5,6加了个object的判断
Object.prototype.duplicate = function() { //我想应该没有人会在object中建立object了吧
var b = new Object();
for (var j in this) {
b[j] = this[j];
}
return b;
};
Array.prototype.duplicate = function() {
var repetition:Array = new Array();
for (var element in this) {
if (this[element] instanceof Array) {
repetition[element] = this[element].duplicate();
} else if (this[element] instanceof Object) {
repetition[element] = this[element].duplicate();
} else {
if (!(this[element] instanceof Function)) {
repetition[element] = this[element];
}
}
}
return repetition;
};
var myArray:Array = new Array();
myArray[0] = [1, 2];
myArray[1] = {x:3, y:4};
myArray[2] = [5, [6, {a:21, b:22}]];
var temp:Array = myArray.duplicate();
trace(myArray[2][1][1].a);
trace(temp[2][1][1].a);
myArray[2][1][1].a = 8;
trace(myArray[2][1][1].a);
trace(temp[2][1][1].a);
除了object中建立object外，这个写法一次解决了Array和Object的复制问题，我想应该没有什么遗漏了吧