Question

在javascript中警告变量时，它显示如下.. 共9个值（姓名，地址，城市，朋友等）

如何检索值

[object Object]，[object Object]，[object Object]，[object Object]，[object Object]，[object Object]，[object Object]，[object Object]，[object Object]

Answer 1

看起来像对象数组，你需要循环访问每个

for(var x in thatObjectArray){
     doSomethingOn(thatObjectArray[x].name);
     doSomethingOn(thatObjectArray[x].address);
     ...
}

或者进行测试，你可以像alert(thatObjectArray[0].name)

那样做

Answer 2

JSON.stringify（）和.toSource（）方便查看[object Object]。

REF： Implementing Mozilla's toSource() method in Internet Explorer

javascript:
   objRA=[
   {name:"Fred",city:"N.Y",friend:"Mike"},
   {name:"Dave",city:"S.F",friend:"Mike"},
   {name:"Dave",city:"S.F",friend:"Fred"},
   {name:"Mary",city:"S.F",friend:"Fred"},
   {name:"Mary",city:"S.F",friend:"Dave"},
   {name:"Dave",city:"S.F",friend:"Mary"},
   {name:"Fred",city:"N.Y",friend:"Mary"},
];
alert(JSON.stringify(objRA));

显示器

[{"name":"Fred","city":"N.Y","friend":"Mike"},
{"name":"Dave","city":"S.F","friend":"Mike"},
{"name":"Dave","city":"S.F","friend":"Fred"},
{"name":"Mary","city":"S.F","friend":"Fred"},
{"name":"Mary","city":"S.F","friend":"Dave"},
{"name":"Dave","city":"S.F","friend":"Mary"},
{"name":"Fred","city":"N.Y","friend":"Mary"}]

但是，如果......

javascript:
   objRA=[
        {name:"Mike"},
        {name:"Fred",city:"N.Y",friend: "?" },
        {name:"Dave",city:"S.F",friend: "?" },
        {name:"Dave",city:"S.F",friend: "?" },
        {name:"Mary",city:"S.F"},
        {name:"Mary",city:"S.F",friend: "?" },
        {name:"Dave",city:"S.F",friend: "?" },
        {name:"Fred",city:"N.Y"},
];
  objRA[1].friend=objRA[0];
  objRA[2].friend=objRA[0];
  objRA[3].friend=objRA[1];
  objRA[4].friend=objRA[1];
  objRA[5].friend=objRA[2];
  objRA[6].friend=objRA[4];
  objRA[7].friend=objRA[4];
alert(objRA.toSource().split("},").join("},\n"));

然后只有.toSource（）可以显示（只需一点手动说服）：

    [#1={name:"Mike"},
     #2={name:"Fred", city:"N.Y", friend:#1#},
     #3={name:"Dave", city:"S.F", friend:#1#},
        {name:"Dave", city:"S.F", friend:#2#},
     #4={name:"Mary", city:"S.F", friend:#2#},
        {name:"Mary", city:"S.F", friend:#3#},
        {name:"Dave", city:"S.F", friend:#4#},
        {name:"Fred", city:"N.Y", friend:#4#}]

从javascript对象中获取价值

2 个答案: