Question

我有一个包含

等对象的数组

var array = [{x:'Thu Jul 27 2017 01:00:00 GMT+0200 (Central European Daylight Time)',y:1},
{x:'Thu Jul 27 2017 01:10:00 GMT+0200 (Central European Daylight Time)',y:5},
{x:'Thu Jul 27 2017 01:15:00 GMT+0200 (Central European Daylight Time)',y:3},
...
{x:'Thu Jul 27 2017 23:55:00 GMT+0200 (Central European Daylight Time)',y:8},
];

我需要用5分钟检查每个间隔时间。假设我的开始和结束时间是

var start = 'Thu Jul 27 2017 01:00:00 GMT+0200 (Central European Daylight Time)';
var end = 'Thu Jul 27 2017 23:55:00 GMT+0200 (Central European Daylight Time)';

如果缺少任何间隔数据，我需要以给定的时间间隔推送该对象作为关键字＆＃39; x＆＃39;并且＆＃39; y＆＃39;为0.表示我的输出必须如下所示 -

var output= [{x:'Thu Jul 27 2017 01:00:00 GMT+0200 (Central European Daylight Time)',y:1},
{x:'Thu Jul 27 2017 01:05:00 GMT+0200 (Central European Daylight Time)',y:0},
{x:'Thu Jul 27 2017 01:10:00 GMT+0200 (Central European Daylight Time)',y:5},
{x:'Thu Jul 27 2017 01:15:00 GMT+0200 (Central European Daylight Time)',y:3},
...
{x:'Thu Jul 27 2017 23:55:00 GMT+0200 (Central European Daylight Time)',y:8},
];

缺少对象{x：＆＃39; Thu Jul 27 2017 01:05:00 GMT + 0200（中欧夏令时）＆＃39;，y：0}已被添加。我尝试了什么。

var start = 'Thu Jul 27 2017 01:00:00 GMT+0200 (Central European Daylight Time)';
var end = 'Thu Jul 27 2017 23:55:00 GMT+0200 (Central European Daylight Time)';
 var interval = 300000;
 //loop through every 5 minute interval
 for(var dt = start;dt<end;dt = new Date(dt.getTime()+ interval)){
    if( !lookup( dt , array ) ) {
      array .push({
        x: dt,
        y: 0
      });
    }
 }
 console.log("Unsorted output is" + array);// result

function lookup( name,arr ) {
  for(var i = 0, len = arr.length; i < len; i++) {
    if( arr[ i ].key === name )
        return true;
  }
  return false;
}

就我的逻辑而言，我看到一切都还可以，但我看不到丢失的间隔。谁能帮助我，我做错了什么。提前谢谢。

Answer 1

为什么不尝试将对象转换为毫秒并进行比较...

代码片段应该更简单一些，并为您提供我所谈论的内容的要点。

在这个例子中，我创建了一个数组，它保存每个日期对象的millisec值。循环实际对象并使用getTime()方法将其动态转换为毫秒，虽然未经测试......这可能比一次推送转换后的整数要慢。

这给您留下的唯一挑战是订购以及您是否需要订购日期......使用此方法，它只是将新值推送到最后的对象中。

注意代码未经测试 - 只需提供一个通用的IDEA

＆＃13;

//create an array in tandem with your objects array that holds the millisec value

var millisecArray = [];

for(var i = 0; i < array.length; i++) { //loop through the existing date object array
	millisecArray.push(array[i]['x'].getTime()); //and push its millisec value into the new array
}

var start = startObj.getTime(); //gets the time in millisecs
var end = endObj.getTime(); //gets the time in millisecs
var interval = 300000;
var newDateObj = new Date();

 //loop through every 5 minute interval
 for(var current = start; current < end; current = current + interval;){ //keep looping until current is 5 minutes smaller than end
    if( !lookup( current , millisecArray ) ) {
      array.push({
        x: newDateObj.setTime(current),
        y: 0
      });
      millisecArray.push(current);
    }
 }

function lookup( name,arr ) {
  for(var j = 0; i < arr.length; j++) {
    if( arr[ j ] === name )
        return true;
  }
  return false;
}

＆＃13;

检查键值是否存在于数组对象中，如果不存在则推送对象内部数组和短数组具有相同的键值

1 个答案: