New array from if statement results

Question

I have an array containing objects.

I want to search the array using an if statement for objects that have a certain property and create a separate array containing only those objects.

var firstArray = [...]

for (var a = 0; a < firstArray.length; a++) {
  if (firstArray[a].name == 'index.png') {
    // create secondArray here
  }
}

Thanks for your help!

[`Array#filter`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter). — Erazihel, Aug 14 '17 at 12:41
please provide sample data and where did you stuck. There is no need to do this. There are already built in methods like filter — Sagar V, Aug 14 '17 at 12:41

score 0 · Answer 1 · answered Aug 14 '17 at 12:43

0

Just use a filter

var secondArray = firstArray.filter(x => x.name == 'index.png')

answered Aug 14 '17 at 12:43

Pac0

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score 0 · Answer 2 · answered Aug 14 '17 at 12:48

var firstArray = [{
  'name': 'A'
}, {
  'name': 'B'
}, {
  'name': 'C'
}]
var newArray = [];

for (name in firstArray) {
  if (firstArray[name].name == 'A') {
    newArray = firstArray[name];
    console.log(newArray)
  }
}

Kindly check this snippet.

atiq1589 · Answer 3 · 2017-08-14T13:06:00.003

-1

You can use this way

var obj = {'el1': 1, 'el2': 2};
var firstArray = [{'el1': 1, 'el2': 2}, {'el3': 1, 'el4': 2}]
var searchTerm = 'el1';
for(var a=0; a<firstArray.length; a++){
  for(var key in firstArray[a]){
    if(key == searchTerm){
      // do whatever you want to do. 
    console.log('key = ', key, 'value = ', obj[key]);
    }
  }
}

edited Aug 14 '17 at 13:06

answered Aug 14 '17 at 12:43

atiq1589

2,227
1
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The OP starts with an array, not an object... – War10ck Aug 14 '17 at 12:43
And this doesn't filter at all. Also, `key` should be declared. – PeterMader Aug 14 '17 at 12:44
I think you are talking about this solution. I just wrote inner part before. – atiq1589 Aug 14 '17 at 13:07

New array from if statement results

3 Answers3