Parsing JSON to a regular JavaScript array

Question

How can I load a regular array from a JSON Response like this:

{"project":"8","powerline":"188.396496","road":"7.876766","cost":"69885005.45"}

to

var cars = [8, 188.396496, 7.876766, 69885005.45];

I already tried something like this:

req.done(function(data) {
var cars = JSON.parse(data);
});

but it is not doing the job.

• Mona Coder: Hi kamesh it is jquery json object
• Salman: I believe the OP has forgotten to add node.js as a tag

Answer 1

You can simply run a for..in loop like this. and keep pushing the values into a new array.

var obj = {
 "project" : "8",
 "powerline" : "188.396496",
 "road" : "7.876766",
 "cost" : "69885005.45"
}
var arr = [];
for (var key in obj) {
 var val = parseFloat("0" + obj[key]);
 arr.push(val)
}

• Mona Coder: Hi rajub, thanks for reply but as I already mentioned I am getting the JSON from a Ajax request so how I can use your approach?
• rajub: You want to fetch array instead of JSON from ajax? then will have to do on server side
• Mona Coder: besides, it is loading the keys as STRING into the array. Is there any way to force them be populate as Numbers like 8 instead of "8"

Answer 2

You can manipulate JSON object as Array, please try this way

req.done(function(data) {
 var cars = $.map(JSON.parse(data), function(value, index){
 return i;
});
 console.log(cars);
});

• Mona Coder: Hi Girish, Thanks for reply but this is not functioning,

Answer 3

That's because you're getting an object when you're calling JSON.parse. You can run the following to get the values without keys:

req.done(function (data) {
 var jsonData = JSON.parse(data),
 cars = []
 for (var key in jsonData) {
 cars.push(jsonData[key])
 }
})