javascript - Add class to radio button - 


<input id="radio1" type="radio" name="rgroup" value="1" >  <label for="radio1"><span><span></span></span>1</label> <input id="radio2" type="radio" name="rgroup" value="2" >  <label for="radio2"><span><span></span></span>1</label>

i have , want add image element checked using javascript. how can it?

is important add class radio checked? can css:

#radio1:checked + label {     color: #f00; }

demo

#radio1:checked + label:after {     content: url(image_url_here); }

demo 2 (with image embedded when select radio box)

demo 3 (with tick image)


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