如何使用javascript或angular js从数组中删除对象？

Question

I am trying to remove object from array and get the resulted array.I am using remove function but it is not working perfectly Here is my input

I need to remove all value of array which have "file": "Id"

here is my fiddle

for (var i = 0; i < arr.length; i++) {
    for (var k = 0; i < arr[i].columns.length; i++)
    arr[i].columns[0].remove()
}

Answer 1

Can you try this function to remove all value of array which have "file": "Id"

for(var i=0; i<arr.length;i++){
    for (var k=0; k < arr[i].columns.length; k++){
        if(arr[i].columns[k].fieldNameOrPath == 'Id'){
            arr[i].columns.splice(k,1)
        }
    }
}

Answer 2

Slight error in incrementing k

for(var i=0; i<arr.length;i++){
    for (var k=0; k<arr[i].columns.length;k++)
    delete arr[i].columns[0]
}

Updated JS Fiddle

Answer 3

you can use Underscore.js

var result = _.map(arr, function(obj){ 
                return {
                    columns: _.reject(obj['columns'], function(innerObj){
                                return innerObj['fieldNameOrPath'] == 'Id';
                            })
                }
            });