metric conversion

converting the metric system

by mrcrazypants987

HTML

<select onchange="A(this)">
<option>insert value</option>
<option>milli</option>
<option>centi</option>
<option>deci</option>
<option>basic</option>
<option>deka</option>
<option>hecto</option>
<option>kilo</option>
</select>


<select onchange="B(this)">
<option>insert value</option>
<option>milli</option>
<option>centi</option>
<option>deci</option>
<option>basic</option>
<option>deka</option>
<option>hecto</option>
<option>kilo</option>
</select>
<input type="text"id = "input"> 
<button class ="btn1"onclick="convert()">convert</button>

<p id="p5" style="font-size:300%;" ></p>
 



<script>
var C
var D
var E
var val
var powerd
var final 
function A(x){
  C = x.selectedIndex;


}

function B(x){
  D = x.selectedIndex;

}

function convert(){

val =document.getElementById("input").value;
E=D-C;

powered=Math.pow(10,E);

final=val*powered;
document.getElementById("p5").innerHTML=final;
}


</script>