从javascript对象获取值
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) 如何检索值从javascript对象获取值,javascript,string,object,Javascript,String,Object,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 object],[object object object],[object object object],[objec
[object object],[object object object],[object object],[object object object],[object object object],[object object object],[object object object],[object object object],[object object object],[object object object],[object object object],[object object object object],看起来像是对象数组,您需要循环访问每个对象
for(var x in thatObjectArray){
doSomethingOn(thatObjectArray[x].name);
doSomethingOn(thatObjectArray[x].address);
...
}
或者,为了进行测试,您可以像alert(thatObjectArray[0].name)
JSON.stringify()和.toSource()一样方便查看[object]
参考:
显示
[{"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(需要一些手动说服):
[#1={name:“Mike”},
#2={姓名:“弗雷德”,城市:“纽约”,朋友:#1#},
#3={姓名:“戴夫”,城市:“S.F”,朋友:#1#},
{姓名:“戴夫”,城市:“S.F”,朋友:#2#},
#4={姓名:“玛丽”,城市:“旧金山”,朋友:{2},
{姓名:“玛丽”,城市:“S.F”,朋友:#3#},
{姓名:“戴夫”,城市:“旧金山”,朋友:#4#},
{姓名:“弗雷德”,城市:“纽约”,朋友:#4#}]
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"));
[#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#}]