How to delete an item from array of objects?

Question

    var arr = [
                     {id:2,date:'2010-10-03',des:'goodday'},
                     {id:3,date:'2011-02-13',des:'badday'},
                     {id:4,date:'2011-04-03',des:'niceday'}
                   ];

Now I want to delete {id:3,date:'2011-02-13',des:'badday'} , and then the arr should be

        var arr = [
                     {id:2,date:'2010-10-03',des:'goodday'},
                     {id:4,date:'2011-04-03',des:'niceday'}
                   ];

How should I do?

KJYe.Name · Accepted Answer · 2011-04-12 03:03:57Z

15

Assume the id fields in you Objects are unique you can do the following to delete it. The function to use is Splice:

    var arr = [
        {
        id: 2,
        date: '2010-10-03',
        des: 'goodday'},
    {
        id: 3,
        date: '2011-02-13',
        des: 'badday'},
    {
        id: 4,
        date: '2011-04-03',
        des: 'niceday'}
    ];

    for(var i=0; i<arr.length; i++){
        if(arr[i].id == 3){
            arr.splice(i, 1);  //removes 1 element at position i 
            break;
        }
    }

console.log(arr);  
//should give you 
//                      var arr = [
//                               {id:2,date:'2010-10-03',des:'goodday'},
//                               {id:4,date:'2011-04-03',des:'niceday'}
//                          ];

answered Apr 12, 2011 at 3:03

KJYe.Name

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Comments

cwharris · Accepted Answer · 2011-04-12 03:03:13Z

1

See here:

http://wolfram.kriesing.de/blog/index.php/2008/javascript-remove-element-from-array

answered Apr 12, 2011 at 3:03

cwharris

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2 Comments

cwharris Over a year ago

That's impossible, as the answer you've marked as the solution uses the splice method.

Cynial Over a year ago

Splice is right, but indexOf can't work in my case. It's not the complete answer

j0k · Accepted Answer · 2012-08-13 14:38:32Z

0

arr.splice(1,1); will remove the object at arr[1], and arr[2] will slide into its place.

edited Aug 13, 2012 at 14:38

j0k

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answered Apr 12, 2011 at 4:23

kennebec

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