Question

我在highChart中创建了一个热图。我从Web套接字获得了datajson的回复。如何从这个json制作热图？

var datajson = [
    {"type":"a","symbol":"GOO","price":"385.7110"},
    {"type":"a","symbol":"ORCl","price":"444.711"},
    {"type":"b","symbol":"GOO","price":"555.711"}
]

我需要

var datajson = [
    [0,0,385.7110],
    [0,1,444.711],
    [1,0,555.711]
]

Answer 1

你还没有说为什么要在数组中设置1和0，所以我无法猜测。但这是一种使用Array.prototype.map迭代数组，修改它并获得新数组的方法。

var datajson = [
  {"type":"a","symbol":"GOO","price":"385.7110"},
  {"type":"a","symbol":"ORCl","price":"444.711"},
  {"type":"b","symbol":"GOO","price":"555.711"}
]

// map over the datajson array returning a new array
var result = datajson.map(item => [
  item.type === 'a' ? 0 : 1,
  item.symbol === 'GOO' ? 0 : 1,
  item.price
])
    
console.log(result)

Answer 2

var replace = function(data) {
  for (var i = 0; i < data.length; i++) {
    if (data[i].type === "a") {
      data[i].type = "0";
    } else {
      data[i].type = "1";
    }

    if (data[i].symbol === "GOO") {
      data[i].symbol = "0";
    } else { 
      data[i].symbol = "1";
    }
  }
};          

var datajson = [{"type":"a","symbol":"GOO","price":"385.7110"}, 
                {"type":"a","symbol":"ORCl","price":"444.711"}, 
                {"type":"b","symbol":"GOO","price":"555.711"}];

replace(datajson);

使用jquery删除并替换JSON的值

2 个答案: