Getting specific JSON data into Javascript Array

Asked Jul 13 '20 at 03:25

Active Jul 13 '20 at 03:25

Viewed 23 times

I have an object of FX prices that I need to put into a data array for a chart. The JSON looks like this.

    {date: "2020-02-10", open: 1.3301, high: 1.3329, low: 1.3285, close: 1.3317, …}
    {date: "2020-02-11", open: 1.3315, high: 1.332, low: 1.3272, close: 1.3287, …}
    {date: "2020-02-12", open: 1.3284, high: 1.3295, low: 1.3231, close: 1.325, …}
    {date: "2020-02-13", open: 1.3247, high: 1.327, low: 1.3236, close: 1.3268, …}
    {date: "2020-02-14", open: 1.3266, high: 1.3269, low: 1.3231, close: 1.3253, …}
    {date: "2020-02-16", open: 1.3248, high: 1.3255, low: 1.3237, close: 1.3237, …}
    {date: "2020-02-17", open: 1.3248, high: 1.3255, low: 1.3222, close: 1.3235, …}

I am looking for an elegant way to get just the close data into an array like this: 0: 1.3317 1: 1.3287 2: 1.325 3: 1.3268 4: 1.3253

Any suggestions?

asked Jul 13 '20 at 03:25

Justin

1

Look at `Array.map()` https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map – Abraham Labkovsky Jul 13 '20 at 03:31
You don't specify if these objects are in an array... That is my assumption though – Abraham Labkovsky Jul 13 '20 at 03:33
1

See this if it helps- https://stackoverflow.com/questions/19590865/from-an-array-of-objects-extract-value-of-a-property-as-array – Sagar Darekar Jul 13 '20 at 03:36
1

Assuming these objects are in 'data' array. You can use - let closeArr = data.map(({close}) => close); – Akshay Kapoor Jul 13 '20 at 03:45
Thanks, map did the job nicely. – Justin Jul 13 '20 at 14:19

Getting specific JSON data into Javascript Array

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