无法通过JavaScript访问变量-范围错误？

Question

我在一个单独的.js文件中有一些类似于此的数据：

data = new Object();
data['cat'] = ['Mr. Whiskers','Wobbles'];
data['dog'] = ['Toothy'];
data['fish'] = ['goldy','roose'];

function getStuff(info)
{
  var stuff = data[info.value];
  return stuff;
}

现在在另一个带有块的html文件中，我有类似以下内容：

function theDrop(dynamic) {
  alert(getStuff(dynamic));
}

框上显示undefined ，为什么？

Answer 1

您要传递给theDrop什么？ 如果要调用.value则需要传递整个对象，否则将无法undefined

现场演示

var select = document.getElementById("selectme");

select.onchange = function(){
    theDrop(this);
}

data = new Object();
data['cat'] = ['Mr. Whiskers','Wobbles'];
data['dog'] = ['Toothy'];
data['fish'] = ['goldy','roose'];

function getStuff(info)
{
    var stuff = data[info.value];
    return stuff;
}

function theDrop(dynamic) {
    alert(getStuff(dynamic));
}