javascript remove all objects from array based on property value

Question

How can I remove all objects from an array based on a property value ?

function removeByKey(array, fieldName){
        array.some(function(item, index) {
            return (array[index].name === fieldName) ? !!(array.splice(index, 1)) : false;
        });
        return array;
    }
    
    const myarr = [
      {
        name: 'foo',
        school: 'hoo'
      },{
        name: 'foo',
        school: 'xooo'
      },{
        name: 'bar',
        school: 'xooo'
      }
    ];
    
    console.log(removeByKey(myarr, 'foo'))

in the above code, it just removes one of the objects. how can i remove all if matches?

Baruch · Accepted Answer · 2018-08-07T10:25:16.293

5

Why not use filter MDN ?

const myarr = [
  {
    name: 'foo',
    school: 'hoo'
  },{
    name: 'foo',
    school: 'xooo'
  },{
    name: 'bar',
    school: 'xooo'
  }
];

const filteredArray = myarr.filter(obj => obj.name !== 'foo');

Example: https://repl.it/repls/SimultaneousSentimentalForms

Edited to match the comment.

edited Aug 07 '18 at 10:25

answered Aug 07 '18 at 10:23

Baruch

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1

i mean, i need to REMOVE not keep the matches. – teebeetee Aug 07 '18 at 10:24
1

... Then do `obj.name !== 'foo'` .... @storis I edited my answer to match what you need. – Baruch Aug 07 '18 at 10:24

score 1 · Answer 2 · answered Aug 07 '18 at 10:29

You can use the filter function for this:

function removeByKey(arr, propertyValue) {

  return arr.filter(item => item.name !== propertyValue);

}

const myarr = [
  {
    name: 'foo',
    school: 'hoo'
  },{
    name: 'foo',
    school: 'xooo'
  },{
    name: 'bar',
    school: 'xooo'
  }
];

console.log(removeByKey(myarr, 'foo'));

a bit more generic removeByKey function will be:

function removeByKey(arr, propertyName, propertyValue) {

  return arr.filter(item => item[propertyName] !== propertyValue);

}
const myarr = [
  {
    name: 'foo',
    school: 'hoo'
  },{
    name: 'foo',
    school: 'xooo'
  },{
    name: 'bar',
    school: 'xooo'
  }
];

console.log(removeByKey(myarr, 'name', 'foo'));

javascript remove all objects from array based on property value

2 Answers2