無法通過JavaScript訪問變量-范圍錯誤？

Question

我在一個單獨的.js文件中有一些類似於此的數據：

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;
}

現在在另一個帶有塊的html文件中，我有類似以下內容：

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

框上顯示undefined ，為什么？

Answer 1

您要傳遞給theDrop什么？ 如果要調用.value則需要傳遞整個對象，否則將無法undefined

現場演示

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));
}