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 Write a programme using  loop for star pattern;

<html>

<head><title>javascript</title>

<script>

function switch(){

let a;

a=2;         // if we will give the value of a=1; then all cases will display , if we give the value of a=3; then first two cases will display and if a=4; then first case will display     

switch(a){

case 1:

document.write("hello"+"<br>");

case 2:

document.write("javascript"+"<br>");

case 3:

document.write("HTML"+"<br>");

case 4:

document.write("CSS");

}

}

document.getElementById("demo").innerHTML=switch();

</script>

</head>

<body>

<p id="demo"></p>

</body>

</html>

          

output:-

Hello 

javascript

HTML

 Write a programme using loop for downward star pattern;

<html>

<head><title>javascript</title>

<script>

function switch(){

let a;

a=1;      

switch(a){

case 1:

document.write("hello"+"<br>");

case 2:

document.write("javascript"+"<br>");

break;                     // where we will write break case will end at it

case 3:

document.write("HTML"+"<br>");

case 4:

document.write("CSS");

}

}

document.getElementById("demo").innerHTML=switch();

</script>

</head>

<body>

<p id="demo"></p>

</body>

</html>

OUTPUT

hello

javascript