Remove object from a JavaScript Array? [duplicate]

Question

Possible Duplicate:
Remove specific element from a javascript array?

Specifically I have an array as follows:

var arr = [
    {url: 'link 1'},
    {url: 'link 2'},
    {url: 'link 3'}
];

Now you want to remove valuable element url "link 2" and after removing the only arrays as follows:

arr = [
    {url: 'link 1'},
    {url: 'link 3'}
];

So who can help me this problem? Thanks a lot

Answer 1

You could do a filter.

var arr = [
  {url: "link 1"},
  {url: "link 2"},
  {url: "link 3"}
];

arr = arr.filter(function(el){
  return el.url !== "link 2";
});

PS: Array.filter method is mplemented in JavaScript 1.6, supported by most modern browsers, If for supporting the old browser, you could write your own one.

Answer 2

Use the splice function to remove an element in an array:

arr.splice(1, 1);

If you would like to remove an element of the array without knowing the index based on an elements property, you will have to iterate over the array and each property of each element:

for(var a = 0; a < arr.length; a++) {
    for(var b in arr[a]) {
        if(arr[a][b] === 'link 2') {
            arr.splice(a, 1);
            a--;
            break;
        }
    }
}