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<div> <label for="checkbox">Checkbox:</label> <input type="checkbox" name="one" id="checkbox" /> </div> <div> <label for="checkbox">Checkbox:</label> <input type="checkbox" name="two" id="checkbox" /> </div> <div> <label for="checkbox">Checkbox:</label> <input type="checkbox" name="three" id="checkbox" /> </div> <div> <label for="checkbox">Checkbox:</label> <input type="checkbox" name="four" id="checkbox" /> </div> <div> <input type="submit" value="Submit" /> </div> </form> <script type="text/javascript"> function checkboxes() { var chkd = document.form1.one.checked || document.form1.two.checked|| document.form1.three.checked|| document.form1.four.checked; if (chkd) { return true; //Submit the form } else { alert ("please check a checkbox"); return false; //Prevent it from being submitted } } </script> |
