新手求帮忙解惑

矢口╰+雲℡淡

function CompareFunction(propertyName){
function  Compare(object1,object2)
{
  var value1=object1[propertyName];
  var value2=object2[propertyName];
  if(value1<value2){return -1;}
  else if(value1>value2){return 1;}
  else {return 0;}
  
}
return(Compare());
}
var data=[{name:"Zachary",age:"28"},{name:"Nicholas",age:29}];
data.sort(CompareFunction('name'));
alert(data[0].name);
data.sort(CompareFunction('age'));
alert(data[0].name);
这段代码错误在哪里？求解惑改成一下代码就能运行了为什么？
function CompareFunction(propertyName){
return function (object1,object2)
{
  var value1=object1[propertyName];
  var value2=object2[propertyName];
  if(value1<value2){return -1;}
  else if(value1>value2){return 1;}
  else {return 0;}
  
}；
/*return(Compare());*/
}
var data=[{name:"Zachary",age:"28"},{name:"Nicholas",age:29}];
data.sort(CompareFunction('name'));
alert(data[0].name);
data.sort(CompareFunction('age'));
alert(data[0].name);

565123

这里是Java，不是JavaScript。你来错地方了

565123

Compare函数的两个参数都是undefined，当然没有propertyName的这个属性，理所当然出错了