select default radio button code example

Example 1: default checked radio button

<input type="radio" name="imgsel" value="" checked>

Example 2: auto select radio button

<input type="radio" name="imgsel" value="" checked>

Example 3: radio by default selected

checked="checked"

Example 4: radio selected

//checked
  <input type="radio" id="huey" name="drone" value="huey"
         checked>