javascript - How to get sum of onload inputs -

html:

<table id="tab1">     <tr id="maint">       <td style="background-color:white;"></td>       <td>słowo klucz</td>       <td>ilość wynikow google</td>     </tr>     <tr>       <td id="maint">słowo klucz</td>       <td><input type="text" name="klucz" value="" required></td>       <td><input type="number" name="wyszkiwania" value=""  onblur="sumx()" onkeyup="operatorf()" id="eq"required></td>     </tr>     <tr>       <td id="maint">słowo klucz</td>       <td><input type="text" name="klucz" value=""></td>         <td><input type="number" name="wyszkiwania" value="" onblur="sumx()"  onkeyup="operatorf()" id="eq"required></td>     </tr>   </table> 

js:

var wejscie = document.getelementbyid('eq').value;    if ( wejscie <= 100000) {     var stawka13 = 59;     var stawka46 = stawka13*0.75;     var stawka710 = stawka46*0.55;   }   else {     var stawka13 = wejscie/100000*59;     if (stawka13 > 210) {       stawka13 = 210;     }     var stawka46 = stawka13*0.75;     var stawka710 = stawka46*0.55;   }    stawka13 = math.round(stawka13).tofixed(2);   stawka46 = math.round(stawka46).tofixed(2);   stawka710 = math.round(stawka710).tofixed(2); document.getelementbyid('sum13').innerhtml = "";   document.getelementbyid('sum46').innerhtml = "";   document.getelementbyid('sum710').innerhtml = "";   document.getelementbyid('sum13').innerhtml = " "+sum13+" zł";   document.getelementbyid('sum46').innerhtml = " "+sum46+" zł";   document.getelementbyid('sum710').innerhtml = " "+sum710+" zł"; 

i sum of eq. try arr etc aint work "properly" want. target sum of math in it. i'm not allowed add jq impotant stay on meta.