Given the following JavaScript code: elem = document.createElement('span'). Which statement can be used to add the new element to the DOM. document.body.childNode(elem) document.body.appendChild(elem) document.body.parentNode(elem)

* IN VISUAL BASICS

You may have found it somewhat tedious and unpleasant to use the debugger and visualizer to verify the correctness of your addFirst and addLast methods. There is also the problem that such manual verification becomes stale as soon as you change your code. Imagine that you made some minor but uncertain change to addLast]. To verify that you didn't break anything you'd have to go back and do that whole process again. Yuck. What we really want are some automated tests. But unfortunately there's no easy way to verify correctness of addFirst and addLast] if those are the only two methods we've implemented. That is, there's currently no way to iterate over our list and get bad its values and see that they are correct. That's where the toList method comes in. When called, this method returns a List representation of the Deque. For example, if the Deque has had addLast (5) addLast (9) addLast (10), then addFirst (3) called on it, then the result of toList() should be a List with 3 at the…

For any element in keysList with a value smaller than 40, print the corresponding value in itemsList, followed by a comma (no spaces). Ex: If keysList = {32, 105, 101, 35} and itemsList = {10, 20, 30, 40}, print: 10,40, #include <iostream>#include <string.h>using namespace std; int main() {   const int SIZE_LIST = 4;   int keysList[SIZE_LIST];   int itemsList[SIZE_LIST];   int i;    cin >> keysList[0];   cin >> keysList[1];   cin >> keysList[2];   cin >> keysList[3];    cin >> itemsList[0];   cin >> itemsList[1];   cin >> itemsList[2];   cin >> itemsList[3];    /* Your code goes here */    cout << endl;    return 0;}

How does the map react when a new entry is added with an already existing key?

Create three students with the following details: Snow White, student ID: A00234,credits: 24 Lisa Simpson, student ID: C22044,credits: 56 Charlie Brown, student ID: A12003,credits: 6 Then enter all three into a lab and print a list to the screen.

Complete the docstring using the information attached (images):def upgrade_stations(threshold: int, num_bikes: int,                     stations: List["Station"]) -> int:    """Modify each station in stations that has a capacity that is less than    threshold by adding num_bikes to the capacity and bikes available counts.    Modify each station at most once.     Return the total number of bikes that were added to the bike share network.     Precondition: num_bikes >= 0     >>> handout_copy = [HANDOUT_STATIONS[0][:], HANDOUT_STATIONS[1][:]]    >>> upgrade_stations(25, 5, handout_copy)    5    >>> handout_copy[0] == HANDOUT_STATIONS[0]    True    >>> handout_copy[1] == [7001, 'Lower Jarvis St SMART / The Esplanade', \                            43.647992, -79.370907, 20, 10, 10]    True    """

Please Help with Java Script eventListeners 1. Add an event listener to the button with an id of "button1". Listen for the click event. The button should change the text content of the paragraph with an id of "p1" to:"Hello World! I'm listening to events." This did NOT work://const button1 = document.querySelector("button1");//const p1 = document.querySelector("p1");//const click = () => {// alert("Hello World! I'm Listening to events.");//} //button1.addEventListener("click", p1, false); This did NOT workconst button1 = document.querySelector("button1");const p1 = button1.querySelector("p1");button1.addEventListener("click", function (event) {event.p1.target.textContent = "Hello World! I'm Listing to events.";}); 2) Add an event listener to the button with an idof "button2". Listen for the click event. Thebutton should change the text content of theparagraph with an id of "p2" to:"This button toggles text content."If the button is clicked a 2nd time,the text content should change…

in this android app  package com.example.myapplication;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;import android.widget.ListView;public class PlayerActivity2 extends AppCompatActivity {ListView simpleList;String SerialNo[] = {"1", "2", "3", "4", "5", "6","7","8","9","10"};int flags[] = {R.drawable.image1, R.drawable.image2, R.drawable.image3, R.drawable.image4, R.drawable.image5, R.drawable.image6, R.drawable.image7, R.drawable.image8, R.drawable.image9, R.drawable.image10};String Names[] = {"mmm", "nnn", "aaa.", "bbb", "ccc", "ddd","eee jk"," ijk","Virgil jk","gil jklk"};String Score[] = {"1", "2","3", "5", "4", "3","5","5","5","5"};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity2);simpleList = (ListView)findViewById(R.id.simpleListView);//ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, R.layout.activity_listview, R.id.textView,…

please use letter M