从javascript中的JSON对象读取值

Question

I have the following JS code:

var response = loadXMLDoc();
var dataset = response.data;
alert(response);
alert (dataset);

"alert(response)" prints this:

{"labels":["-inf - 10","10 - 20","20 - 30","30 - 40","40 - 50","50 - 60","60 - 70","70 - 80","80 - 90","90 - 100","100 - 110","110 - 120","120 - 130","130 - 140","140 - 150","150 - 160","160 - +inf"],"data":[3,8,7,3,7,6,6,7,5,4,10,7,4,4,7,2,0],"count":16}   

while "alert(dataset)" gives "undefined". I have tried to use

     var dataset = response["data"]; 

but it did not work as well. I want to get the data array from the JSON object. How can i do that. Thanks

Answer 1

Use var y = JSON.parse(response); alert(y["data"]) var y = JSON.parse(response); alert(y["data"])

Answer 2

Seeing that you got alert to show response, it's a string, not yet an object.

You need to parse it with JSON.parse()

//load your response
var response = loadXMLDoc(),
    dataset;

//parse response
response = JSON.parse(response);

//assign data to dataset
dataset = response.data;

//Hit F12 to see the console
console.log(response);
console.log(dataset);

​Here's a sample

Answer 3

尝试这个

var dataset = eval('(' + responce.data + ')');