javascript how do you copy an object code example
Example 1: remove a particular element from array
var colors = ["red","blue","car","green"];
var carIndex = colors.indexOf("car");
colors.splice(carIndex, 1);
Example 2: copy object javascript
var x = {key: 'value'}
var y = JSON.parse(JSON.stringify(x))
Example 3: make copy of object javascript
var x = {key: 'value'}
var y = JSON.parse(JSON.stringify(x))
Example 4: Java arraylist if you don't want to use add()
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView myListView = (ListView) findViewById(R.id.myListView);
final ArrayList<String> myFriendsList = new ArrayList<String>(asList("Friend1", "Friend2", "Friend3", "Friend4", "Friend5"));
ArrayAdapter<String> friendsArrayAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, myFriendsList);
myListView.setAdapter(friendsArrayAdapter);
myListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(MainActivity.this, myFriendsList.get(position), Toast.LENGTH_SHORT).show();
}
});
}
}