How do I write into the html using JavaScript? - 


<script> for(var numcols = 1; numcols <= 12; numcols++){     document.write(                         "<div class='row'>" +                         "<div class='well text-center col-lg-" + [numcols] + "'>" + ".col-lg-" + [numcols] + "</div>" +                         "</div>";                      ); } </script>

i know there's document.write/document.writeln have script , don't know what's wrong. i'm trying visualize bootstrap's col-md-* thing

remove semicolon after last </div>

<script> for(var numcols = 1; numcols <= 12; numcols++){     document.write(                         "<div class='row'>" +                         "<div class='well text-center col-lg-" + [numcols] + "'>" + ".col-lg-" + [numcols] + "</div>" +                         "</div>"                     ); } </script>

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