How to use ‘for’ Loop in java Script: Display 2’s Table

<script language="javascript">

//run Script and watch what happened

var j=2;

for(i=1;i<=10;i++)

{

tab=i*j;

document.write(i+"*"+j+"="+tab+"<br/>");

}

</script>

Output:

1*2=2
2*2=4
3*2=6
4*2=8
5*2=10
6*2=12
7*2=14
8*2=16
9*2=18
10*2=20

//run Script and watch what happened

<script language="javascript">

for(i=0;i<=255;i=i+15)

{

for(j=0;j<=255;j=j+20)

{

for(k=255;k>=0;k=k-15)

{

//rgb() could be use in html. Rgb() has three argument for generating colors.

document.write("<h2 style='color:rgb("+i+","+j+","+k+")'>hello</h2>"); }

}

}

</script>