JavaScript code to copy and paste?

<!--The Write Method-->
<script>
document.write("<b> Aquatic plants </b><br>");
document.write("Aquatic plants come in many varieties");
</script>



<!--Assigning variables and the Write Method-->
<script>
sweater1 = "Red";
sweater2 = "Green";
document.write("The colors are:", "<br>", sweater1, "<br> and <br> ", sweater2);
</script>



<!--The Onload Method-->
<script>
window.onload = amessage();
function amessage(){
alert("Maps with pictures of aquatic plants");
}
</script>



<!--The Prompt Method-->
<script>
input=window.prompt("What is your favorite color ?","");
document.write("Welcome. Your favorite color is: ", input,". Thank you!");
</script>



<!--A Timer function-->
<script>
function melding(){
alert("Wait a little longer");
}
</script>
<button onclick="setTimeout(notification, 3000)">Click here to view the timer</button>



<!--Changing the backgrond color of webpage-->
<script>
function backgroundcolor(){
document.body.style.backgroundColor = "red";
}
</script>
<button onclick="backgroundcolor()">Change background color</button>



<!--The use of id-->
<script>
window.onload = function (){
document.getElementById("link").style.color="green";
document.getElementById("link").style.fontFamily="verdana";
document.getElementById("link").style.fontSize="1.5em";
}
</script>

<a id="link" href="aquaticplants.nl">Beautiful aquatic plants</a>



<!--The use of id with a variable-->
<script>
window.onload = function () {
var div = document.getElementById("blackyellow");
div.style.backgroundColor="yellow";
div.style.position="absolute";
div.style.left="200px";
div.style.top="100px";
}
</script>

<div id="blackyellow">
Text with yellow background color
</div>



<!--The use of an function, with a variable and id-->
<script>window.onload = function () {
var div = document.getElementById("textfont");
div.style.color="#00FF00";
div.style.fontFamily="verdana";
div.style.fontSize="2.5em";
}
</script>

<div id="textfont"> <p>Text color, text type, and text size</p></div>

<!--The use of an function, with id and mouseover-->
<script>
function textcolor() {
document.getElementById("color").style.color="#0000ff";
}
</script>

<button type="button" id="color" onmouseover="textcolor()">
Slide here with the mouse pointer to change the color of the text
</button>



<!--The use of loops-->

<!-- The For loop -->
<script>
var i = 0;
window.onload = function(){
for(i=0; i<5; i++){
document.write('Hallo<br>');
}
document.write("it works");
}
</script>



<!-- The Do while loop-->
<script>
window.onload = function(){
var i = 0;
{
i++;
document.write("Hallo<br>");
}
Please note! while just after accolade
while ( i < 5)
document.write("it works");
}
</script>



<!-- The While loop-->
<script>
var i = 0;
window.onload = function(){
while ( i < 5){
i++;
document.write("Hallo<br>");
}
document.write("it works");
}
</script>



<!-- The Do break loop-->
<script>
window.onload = function(){
var i = 0;
do{
i++;
if (i==3){
break;
}
document.write("Hallo<br>");
}while (i<5);
document.write("it works");
}
</script>

<!-- The Break loop-->
<script>
var i = 0;
var n = 0;
while (i < 10) {
i++;
if (i == 6) {
break;
}
n += i;
document.write('<br>');
document.write(n);
}
</script>



<!-- The Continue loop-->
<script>
var i = 0;
var n = 0;
while (i < 10) {
i++;
if (i == 6) {
continue;
}
n += i;
document.write('<br>');
document.write(n);
}
</script>