CODEWITHSUNDEEP
javascriptmathpow
Darren
Darren

Reputation: 3

Math.pow calculations ground and power

I want to create a piece of code with Math.pow

For instance, if I put as a ground number 2 and power level 6
I want the result to count from 0 to 6.

2^0 = 1
2^1 = 2
2^2 = 4
2^3 = 8
2^4 = 16
2^5 = 32
2^6 = 64

This is what I currently have: (on JSFiddle)

function callPow(){
    var val= document.getElementById("txt").value;
    var power= document.getElementById("txt2").value;
    alert(Math.pow(val,power));
}

Upvotes: 0

Views: 750

Answers (4)

user3217785
user3217785

Reputation: 31

Alternately you may also do it using a while loop 

function callPow(){
    var val= document.getElementById("txt").value;
    var power= document.getElementById("txt2").value;
    var count=0;//as you want to start from power 0
    while ( count<= power){
           alert(val + "^"+ count++ +"="+Math.pow(val,count));

    }
}

Fiddle for this will be http://jsfiddle.net/g4maC/7/

Upvotes: 3

user3337971
user3337971

Reputation: 63

A simple for loop should suffice.

Something like this 

function callPow(){
    var val= document.getElementById("txt").value;
    var power= document.getElementById("txt2").value;
    for(count=0; count<= power; count++){
           alert(val + "^"+ count+"="+Math.pow(val,count));
    }
}

Also here's the updated fiddle

Upvotes: 3

Deepu Sasidharan
Deepu Sasidharan

Reputation: 5309

Here is the code 

<script>
 function callPow(){
   var val= document.getElementById("txt").value;
   var power= document.getElementById("txt2").value;
     for(var i=0; i<=power; i++)
     {
    alert(Math.pow(val,i));
     }
 }
 </script>
   Input number :<input type="text" id="txt" value=""/>
    to the power<input type="text" id="txt2" value=""/>
  <button onclick="callPow();">Show Value</button>

Upvotes: 0

George
George

Reputation: 36794

All you need is a loop that will count up to your specified power and alert each time:

function callPow(){
    var val= document.getElementById("txt").value;
    var power= document.getElementById("txt2").value;
    for(i=0; i<= power; i++){
        alert(val+' ^ '+i+' = '+Math.pow(val,i));
    }
}

JSFiddle

Upvotes: 4

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