How to remove double quotes from json array in javascript

Question

I have a array :

Var array=[{"name":"May","data1":"1121.0"}]

I want to change it to :

Var array= [{"name":"May","data1":1121.0}]

Answer 1

Looks like this has been answered before here

I'll summarize;

for(var i = 0; i < objects.length; i++){
    var obj = objects[i];
    for(var prop in obj){
        if(obj.hasOwnProperty(prop) && obj[prop] !== null && !isNaN(obj[prop])){
            obj[prop] = +obj[prop];   
        }
    }
}

console.log(JSON.stringify(objects, null, 2));

This does have a bug where 0 becomes null.

Answer 2

You want to convert the value mapped to the "data1" key to be a number instead of a string.

There are many ways to accomplish this in JavaScript, but the best way to do so would be to use Number.parseFloat like so:

var array = [{"name":"May","data1":"1121.0"}];
array[0]["data1"] = Number.parseFloat(array[0]["data1"]);

console.log(array[0]["data1"]); // 1121

If you need to perform this action with multiple objects inside of array, you could do

var array = [{"name":"May","data1":"1121.0"}, {"name":"May","data1":"1532.0"}, etc.] // Note that this is not valid JavaScript
array.map(obj => {obj["data1"] = Number.parseFloat(obj["data1"]); return obj;});

Answer 3

If I understood well, you only want to convert the value of data1, from "1121.0" to 1121.0, in other words from string to number.

To convert only that key (data1), you only need this:

array[0].data1 = parseFloat(array[0].data1)

If that's not what you want, please explain better your question

Answer 4

You can simply check using Number.isNaN with an attempted cast to a number using the + operator. If it returns true then do nothing. If it's false then change the value of the parameter to a cast number.

var array=[{"name":"May","data1":"1121.0"}];
array.forEach(data => {
 for(let key in data) Number.isNaN(+data[key]) || (data[key] = +data[key])
});

console.log(array);