html - not able to load contents in div using javascript -

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this shan , i'm javascript noob , i'm trying work qa code example here. i'm trying load small javascript content div element not working great , here code.

<html> <head>     <title>     using d statement </title> <script>     function displaytext () {      var loopindex=0;      var sum=0;      (var loopindex=1; loopindex <=100; loopindex++) {        sum +=loopindex;      };      document.getelementbyid('targetdiv').innerhtml="adding 1 100 gives "+sum;     } </script> </head> <body>     <div id="targetdiv">      </div> </body> </html>

you need call function. it's idea wait until window loaded (or can use more advanced js detect dom ready state.):

<html> <head>     <title>     using d statement </title> <script>     function displaytext() {      var loopindex=0;      var sum=0;      (var loopindex=1; loopindex <=100; loopindex++) {        sum +=loopindex;      };      document.getelementbyid('targetdiv').innerhtml = "adding 1 100 gives "+sum;     }     window.onload = function(){       displaytext();     } </script> </head> <body>     <div id="targetdiv">      </div> </body> </html>

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