CODEWITHSUNDEEP
javascriptjqueryjson
danywigglebutt
danywigglebutt

Reputation: 269

Find duplicate values between two separate javascript objects?

I have two javascript arrays of objects:

var fullDateRange=[{date:"4/1/18",value:0},{date:"4/2/18",value:0},{date:"4/3/18",value:0},{date:"4/4/18",value:0},{date:"4/5/18",value:0}]

and 

var actualDateRange=[{date:"4/1/18",value:1},{date:"4/3/18",value:3},{date:"4/5/18",value:5}]

I'm trying to loop through the fullDateRange array, see if any of the actualDateRange dates exist, and increment the value. But I keep getting duplicates with this code:

   function outputDeltaDates(fullDateObj, responseObj) {
    var dateArr = [],
      valueArr = [];
    $.each(fullDateObj, function(index) {
      var fullDate = this;
      var counter = 0
      $.each(responseObj, function(index) {
        var fullResponse = this;
        if (fullResponse['date'] == fullDate['date']) {
          valueArr.push(fullResponse['value'])
          dateArr.push(fullDate['date'])
        } else {
          if (!dateArr.includes(fullDate['date'])) {
            valueArr.push(0)
            dateArr.push(fullDate['date'])
          }
        }
      })
    })
    return [valueArr, dateArr]
  }

Upvotes: 0

Views: 46

Answers (2)

baao
baao

Reputation: 73241

To increment the objects value property if the date exists in the other array, simply loop it once and increment value if the date is found in actualDateRange

var fullDateRange=[{date:"4/1/18",value:0},{date:"4/2/18",value:0},{date:"4/3/18",value:0},{date:"4/4/18",value:0},{date:"4/5/18",value:0}]
var actualDateRange=[{date:"4/1/18",value:1},{date:"4/3/18",value:3},{date:"4/5/18",value:5}]

fullDateRange.forEach(e => {
    let act = actualDateRange.find(a => a.date === e.date);
    if (act) e.value += act.value;
})

console.log(fullDateRange);

Upvotes: 1

Naga Sai A
Naga Sai A

Reputation: 10975

To achieve expected result, push incremented counter to valueArr i.e 

valueArr.push(++counter)

instead of fullResponse['value'] (which will push actualDateRange value)

var fullDateRange=[{date:"4/1/18",value:0},{date:"4/2/18",value:0},{date:"4/3/18",value:0},{date:"4/4/18",value:0},{date:"4/5/18",value:0}]
var actualDateRange=[{date:"4/1/18",value:1},{date:"4/3/18",value:3},{date:"4/5/18",value:5}]

function outputDeltaDates(fullDateObj, responseObj) {
    var dateArr = [],
      valueArr = [];
    $.each(fullDateObj, function(index) {
      var fullDate = this;
      var counter = 0
      $.each(responseObj, function(index) {
        var fullResponse = this;
        if (fullResponse['date'] == fullDate['date']) {
          valueArr.push(++counter)
          dateArr.push(fullDate['date'])
        } else {
          if (!dateArr.includes(fullDate['date'])) {
            valueArr.push(0)
            dateArr.push(fullDate['date'])
          }
        }
      })
    })
     return [valueArr, dateArr]
  } 

console.log(outputDeltaDates(fullDateRange, actualDateRange))
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

code sample - https://codepen.io/nagasai/pen/rvVqdW?editors=1010

Upvotes: 0

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