我想知道以下函数如何设置'this'元素并获取数组单元格？请.
//my secure code
var priv = ['item-0','item-1'];
var api = {push: function(x){priv.push(x)}}
api.store = function(i,x){priv[i] = x}
//the attaker script
var result;
api.store('push',function(){result = this[0]});
api.push();
//the result is cell 0 of private array
//how?
//if i change the 'push' parameter then the result is empty!
document.write(result)