jquery - How to add checkboxes dynamically using javascript? -

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i use bootstrap , have form 2 textfields , 2 checkboxes. add-button, want add (per click) additional textfield checkbox. i'm using js:

$("#addbutton").click(function () {      var newtextboxdiv = $(document.createelement('div'))         .attr("id", 'textboxdiv' + counter);      /*  todo: patterns festlegen    */     newtextboxdiv.after().html('<div class="form-group label-floating">' +         '<label class="control-label">answer' + counter + '</label>' +         '<input type="text" class="form-control"/>' +         '</div><div class="togglebutton"><label><input type="checkbox" checked="">toggle on</input></label></div>');      newtextboxdiv.appendto("#answergroup");       counter++; });

it adds textfield, checkbox isn't showing up, text "toggle on".

how can solve this? inserted js inside $(document).ready(function () {.

edit think css causes problem. when add '</div><input type="checkbox" checked=""/></div>', shows checkbox without ui. after adding rest (like class="togglebutton", see nothing.

the markup checkbox not correct: 

<label><input type="checkbox" checked="">toggle on</input></label>

should be

<label><input type="checkbox" checked="" />toggle on</label>

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