Add two selected value together, then display results JavaScript -

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been trying values id tags totaldiv-totaldiv1 each display results selected values, add them display values combined in real time in id tag totalall keep getting nan.

enter image description here

<h2>£10 each</h2> <select name="iteam1" onchange="calc1()">     <option value="10">1</option>     <option value="20">2</option>     <option value="30">3</option>     <option value="40">4</option>     <option value="50">5</option> </select>  <div id="totaldiv1">&pound;10</div>  <h2>£10 each</h2> <select name="iteam" onchange="calc()">     <option value="10">1</option>     <option value="20">2</option>     <option value="30">3</option>     <option value="40">4</option>     <option value="50">5</option> </select>  <div id="totaldiv">&pound;10</div> <br> <h2>total</h2> <div id="totalall">&pound;0</div>  <script> function calc() {  var fruitorveg = document.getelementsbyname("iteam")[0].value; var total = fruitorveg;    document.getelementbyid("totaldiv").innerhtml= "£" +(total); } </script>  <script> function calc1() {  var fruitorveg = document.getelementsbyname("iteam1")[0].value; var total = fruitorveg;    document.getelementbyid("totaldiv1").innerhtml= "£" +(total); } </script>  <script> window.onload = function total() {      var y = document.getelementbyid("totaldiv").value;     var z = document.getelementbyid("totaldiv1").value;     var x = +y + +z;     document.getelementbyid("totalall").innerhtml = "£" + x; } </script>

point take care. 1. don't mix value , symbol 2. adding symbol in calc function in div , later tried combine them both obiviously not number;

http://jsfiddle.net/ga16gt74/

<h2>£10 each</h2> <select name="iteam1" onchange="calc1()">     <option value="10">1</option>     <option value="20">2</option>     <option value="30">3</option>     <option value="40">4</option>     <option value="50">5</option> </select>  <div id="totaldiv1">&pound;   <span id="totaldiv1value">0</span> </div>  <h2>£10 each</h2> <select name="iteam" onchange="calc()">     <option value="10">1</option>     <option value="20">2</option>     <option value="30">3</option>     <option value="40">4</option>     <option value="50">5</option> </select>  <div id="totaldiv">&pound;   <span id="totaldivvalue">0</span> </div> <br> <h2>total</h2> <div id="totalall">&pound;0</div>   <script> function calc() {     var fruitorveg = document.getelementsbyname("iteam")[0].value;     var value = fruitorveg;     document.getelementbyid("totaldivvalue").innerhtml= value;     total(); }    function calc1() {     var fruitorveg = document.getelementsbyname("iteam1")[0].value;     var value = fruitorveg;     document.getelementbyid("totaldiv1value").innerhtml= value;     total(); }  function total() {      var y = parseint(document.getelementbyid("totaldivvalue").innerhtml);     var z = parseint(document.getelementbyid("totaldiv1value").innerhtml);     var x = y+z;     document.getelementbyid("totalall").innerhtml = "£" + x; } </script>

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