通过其索引删除数组对象

Question

I'm trying to remove an array object from an array. First, I loop to the array of objects and if that array match to the given filter, then remove that object. Below is what I've tried but unfortunately not working, any help, ideas, clues, suggestions, recommendations please?

 $(document).ready(function(){ var n_array = [{ 'name' : 'jason', 'age' : '24'},{ 'name' : 'jason2', 'age' : '20'}]; console.log(n_array); for(var i = 0; i < n_array.length; i++){ if(n_array[i].name==='jason'){ n_array.splice(i,0); } } console.log(n_array); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 

Answer 1

1. You need to use Array#splice and not Array#slice to remove element from array.

    n_array.splice(i, 1); 

 var n_array = [{ 'name': 'jason', 'age': '24' }, { 'name': 'jason2', 'age': '20' }]; for (var i = 0; i < n_array.length; i++) { if (n_array[i].name === 'jason') { n_array.splice(i, 1); } } console.log(n_array); 

2. You can use Array#filter to remove an element from array.

    var n_array = [{ 'name': 'jason', 'age': '24' }, { 'name': 'jason2', 'age': '20' }]; n_array = n_array.filter(function(obj) { return obj.name !== 'jason'; }); console.log(n_array); 

 var n_array = [{ 'name': 'jason', 'age': '24' }, { 'name': 'jason2', 'age': '20' }]; n_array = n_array.filter(function(obj) { return obj.name !== 'jason'; }); console.log(n_array); 

Answer 2

You can use delete .

Here is the reference to it, this is exactly what you looking for.

if (n_array[i].name === 'jason') {
    delete n_array[i].name;
}

The delete operator removes a property from an object.

Answer 3

this may help you n_array.slice(i); replace this with n_array.splice(i, 1);

slice() method is used to select the elements from array

Answer 4

Problem with yours code is splice syntax

splice syntax is: array.splice(index,howmany element going to delete,value_item1,.....,value_itemX);

In urs code you are using n_array.splice(i,0) ; so you are giving 0 element to delete.

Make it Like

var n_array = [{ 'name' : 'jason', 'age' : '24'},{ 'name' : 'jason2', 'age' : '20'}];

  console.log(n_array);

  for(var i = 0; i < n_array.length; i++){
   if(n_array[i].name==='jason2'){
     n_array.splice(i,1);
   }
  }
  console.log(n_array);

Hope it will help