I am using ajax to get a small set of data back from the server which returns JSON data with the following format:
我使用ajax从服务器返回一小组数据,返回JSON数据,格式如下:
{
"data": [
{
"id": "1",
"value": "One"
},
{
"id": "2",
"value": "Two"
},
{
"id": "3",
"value": "Three"
}
]
}
On the client side, this is assigned to a variable named response
. I use response.data
to get the contents.
在客户端,这被分配给名为response的变量。我使用response.data来获取内容。
The question is, is there an easier way to get the value without doing a loop? I'm kinda looking for something like this response[id==2].value
which should give me "Two".
问题是,有没有更简单的方法来获得价值而不进行循环?我有点像这个回复[id == 2] .value,它应该给我“两个”。
I'm open for any suggestions if this is not possible.
如果不可能,我愿意接受任何建议。
2 个解决方案
#1
3
You could take a functional approach and use the Array.filter method:
您可以采用函数方法并使用Array.filter方法:
var matchingResults = JSON['data'].filter(function(x){ return x.id == 2; });
// procede to use matching elements...
#2
2
If you parse it into a javascript object using something like jQuery's json parse method, you could just reference the various items in the array like a normal javascript array.
如果使用jQuery的json parse方法将其解析为javascript对象,则可以像普通的javascript数组一样引用数组中的各个项。
Do it like this:
像这样做:
var dataArray = $.parseJSON(myJson).data;
var theFirstData = dataArray[0]; //get the data with id "1"
Alternately, if you don't want to use jQuery, you can use JSON.parse(jsonToParse)
. Here're the docs for that method.
或者,如果您不想使用jQuery,则可以使用JSON.parse(jsonToParse)。这是该方法的文档。
#1
3
You could take a functional approach and use the Array.filter method:
您可以采用函数方法并使用Array.filter方法:
var matchingResults = JSON['data'].filter(function(x){ return x.id == 2; });
// procede to use matching elements...
#2
2
If you parse it into a javascript object using something like jQuery's json parse method, you could just reference the various items in the array like a normal javascript array.
如果使用jQuery的json parse方法将其解析为javascript对象,则可以像普通的javascript数组一样引用数组中的各个项。
Do it like this:
像这样做:
var dataArray = $.parseJSON(myJson).data;
var theFirstData = dataArray[0]; //get the data with id "1"
Alternately, if you don't want to use jQuery, you can use JSON.parse(jsonToParse)
. Here're the docs for that method.
或者,如果您不想使用jQuery,则可以使用JSON.parse(jsonToParse)。这是该方法的文档。