对于数组中的每个元素，将字符串添加到第二个数组中

Question

对于数组arr []的每个元素，我需要将此字符串添加到另一个数组中。我这样尝试过：

var arr = ["TagID3", "TagID4", "TagID5", "TagID6", "TagID7", "TagID8", "TagID9"];
var newarr = [];

for (var i = 0; i < arr.length; i++) {
  newarr.push({
    "id": i,
    "valueAxis": i,
    "bullet": "round",
    "type": "smoothedLine",
    "valueField": i
  })
}

for (var d = 0; d < newarr.length; d++) {
  document.write(newarr[d]);
}

但是它仅显示 [object Object]

Answer 1

您的代码看起来不错，但是您可以使用JSON.stringify()将结果写入可读的文档中。这样可以解决您指出的[object Object]问题：

var arr = ["TagID3", "TagID4", "TagID5", "TagID6", "TagID7", "TagID8", "TagID9"];
var newarr = [];

for (var i = 0; i < arr.length; i++) {
  newarr.push({
    "id": i,
    "valueAxis": i,
    "bullet": "round",
    "type": "smoothedLine",
    "valueField": i
  })
}

/*  
for (var d = 0; d < newarr.length; d++) {

  // Use JSON.stringify to produce a string from JSON object
  // that will write to document in readable way
  var stringValue = JSON.stringify(newarr[d])

  document.write(stringValue);
}
*/

// Write item data from in newarr as comma separated, readable string
document.write(newarr.map(JSON.stringify).join());