Hi I have json object data from ajax as below.
var history= [
{ date: '12/1/2011', open: 3, high: 5,low: 2, close:4 },
{ date: '12/2/2011', open: 4, high: 6,low: 3, close:5 },
{ date: '12/3/2011', open: 3, high: 5,low: 2, close:3 }
];
I would like to map only stock data to array list as below.
[
[3,5,2,4],
[4,6,3,5],
[3,5,2,3]
]
Prefer use the map method (data.map(function(a)). Any advise or guidance would be greatly appreciated, Thanks
Please do not use history as the name of your variable.
The
Window.historyread-only property returns a reference to the History object, which provides an interface for manipulating the browser session history (pages visited in the tab or frame that the current page is loaded in).
You can try with map(), Object.values() and slice():
var historyList= [
{ date: '12/1/2011', open: 3, high: 5,low: 2, close:4 },
{ date: '12/2/2011', open: 4, high: 6,low: 3, close:5 },
{ date: '12/3/2011', open: 3, high: 5,low: 2, close:3 }
];
historyList = historyList.map(o => Object.values(o).slice(1));
console.log(historyList);you seem like you already know : )
var history= [
{ date: '12/1/2011', open: 3, high: 5,low: 2, close:4 },
{ date: '12/2/2011', open: 4, high: 6,low: 3, close:5 },
{ date: '12/3/2011', open: 3, high: 5,low: 2, close:3 }
];
const parseData = i => [i.open, i.high, i.low, i.close];
const res = history.map(parseData);
