Javascript get the sum of each array seperate -

i've been trying figure out how perform action , i'm sure i'm being idiot (new code here). have xml file (shown below), parsing , attempting build multiple tables each data set based on node "testset". xml file not change how it's designed, grow in how many "testsets" there are. have code below.

i have testspassed , testpassed showing 2 arrays need, can't figure out how sum of each array separate (and expect there unknown amount of arrays in further) , have write table. code below adds both parts of array in tests passed, need keep them separated. want array set 137, 70. thankful or suggestions.

xml

<?xml version="1.0" encoding="utf-8"?> <testsets>   <testset>     <testsetid>testset_ios1</testsetid>     <hardware>ipad air 2</hardware>     <version>ios 8.3</version>     <build>pro 2.7.0.13 </build>     <orientation>portrait</orientation>     <numtestcases>46</numtestcases>     <numtestscripts>17</numtestscripts>     <totaltime>230891.363</totaltime>     <testresults>       <testrun>         <date>24 mar 2015 09:12:00</date>         <hardware>ipad air 2</hardware>         <version>ios 8.1.3</version>         <build>2.7.0.607</build>         <orientation>portrait</orientation>         <numpassed>37</numpassed>         <numfailed>31</numfailed>       </testrun>       <testrun>         <date>27 mar 2015 11:43:18</date>         <hardware>ipad air 2</hardware>         <version>ios 8.1.3</version>         <build>pro 2.7.0.615</build>         <orientation>portrait</orientation>         <numpassed>100</numpassed>         <numfailed>25</numfailed>       </testrun>      </testresults>   </testset>   <testset>     <testsetid>testset_ios2</testsetid>     <hardware>ipad air 2</hardware>     <version>ios 8.1.3</version>     <build>pro 2.7.0.623</build>     <orientation>landscape</orientation>     <numtestcases>38</numtestcases>     <numtestscripts>9</numtestscripts>     <totaltime>20800.255</totaltime>     <testresults>       <testrun>         <date>30 mar 2015 10:29:00</date>         <hardware>ipad air 2</hardware>         <version>ios 8.1.3</version>         <build>2.7.0.615</build>         <orientation>landscape</orientation>         <numpassed>34</numpassed>         <numfailed>15</numfailed>       </testrun>       <testrun>         <date>31 mar 2015 20:00:02</date>         <hardware>ipad air 2</hardware>         <version>ios 8.1.3</version>         <build>pro 2.7.0.620</build>         <orientation>landscape</orientation>         <numpassed>10</numpassed>         <numfailed>19</numfailed>       </testrun>       <testrun>         <date>02 apr 2015 10:15:25</date>         <hardware>ipad air 2</hardware>         <version>ios 8.1.3</version>         <build>pro 2.7.0.623</build>         <orientation>landscape</orientation>         <numpassed>26</numpassed>         <numfailed>12</numfailed>       </testrun>     </testresults>   </testset> </testsets>  

current code

 document.write("<table><tr><th><st>test set id</st></th><th>hardware</th><th>op sys version</th><th>app build</th><th>orientation</th><th>number of test passed</th><th>number of test failed</th></tr>"); var x = xml.getelementsbytagname("testset"); var sum = 0; (i = 0; < x.length; i++) {     document.write("<tr class='dynamictable'><td>");     document.write(x[i].getelementsbytagname("testsetid")[0].childnodes[0].nodevalue);     document.write("</td><td>");     document.write(x[i].getelementsbytagname("hardware")[0].childnodes[0].nodevalue);     document.write("</td><td>");     document.write(x[i].getelementsbytagname("version")[0].childnodes[0].nodevalue);     document.write("</td><td>");     document.write(x[i].getelementsbytagname("build")[0].childnodes[0].nodevalue);     document.write("</td><td>");     document.write(x[i].getelementsbytagname("orientation")[0].childnodes[0].nodevalue);     var y = x[i].getelementsbytagname("testrun");     var testspassed = [];     var testsfailed = [];     (j = 0; j < y.length; j++) {         testspassed.push(y[j].getelementsbytagname("numpassed")[0].childnodes[0].nodevalue);         testsfailed.push(y[j].getelementsbytagname("numfailed")[0].childnodes[0].nodevalue);     }      (var k=0; k<testspassed.length; k++){     sum+=testspassed[k]<<0;    } console.log(sum);         

}

probably not cleanest , best way here's did working:

document.write("<table><tr><th><st>test set id</st></th><th>hardware</th><th>op sys version</th><th>app build</th><th>orientation</th><th>number of test passed</th><th>number of test failed</th></tr>");       var x = xml.getelementsbytagname("testset");       (i = 0; < x.length; i++) {         testspassed = [];         testsfailed = [];         passedsum = 0;         failedsum = 0;         var y = x[i].getelementsbytagname("testrun");         (j = 0; j < y.length; j++) {           passed = (y[j].getelementsbytagname("numpassed")[0].childnodes[0].nodevalue);           failed = (y[j].getelementsbytagname("numfailed")[0].childnodes[0].nodevalue);           passedsum += passed << 0;           failedsum += failed << 0;         }         document.write("<tr class='dynamictable'><td>");         document.write(x[i].getelementsbytagname("testsetid")[0].childnodes[0].nodevalue);         document.write("</td><td>");         document.write(x[i].getelementsbytagname("hardware")[0].childnodes[0].nodevalue);         document.write("</td><td>");         document.write(x[i].getelementsbytagname("version")[0].childnodes[0].nodevalue);         document.write("</td><td>");         document.write(x[i].getelementsbytagname("build")[0].childnodes[0].nodevalue);         document.write("</td><td>");         document.write(x[i].getelementsbytagname("orientation")[0].childnodes[0].nodevalue);         document.write("</td><td>");         document.write(passedsum);         document.write("</td><td>");         document.write(failedsum);         document.write("</td></tr>");       }