javascript - 如何验证单选按钮

Question

我正在尝试通过单选按钮验证性别。这是我的代码。但它不起作用。javascript

function checkgender() {
  var gen = document.subscribe.gender[0].checked;
  var gen1 = document.subscribe.gender[1].checked;

  if((gen==false)&&(gen1==false)) {

    alert('Please Select your Gender Type!');
    return false;
  }
  return true;
}

html

<input type="radio" name="gender" value="male" id="gender">male
<input type="radio" name="gender" value="female" id="gender">female
<input name="but" type="button" value="Add" class="btn btn-primary" onClick="checkgender()" /> 

Answer 1

HTML:

<input name="but" type="button" value="Add" class="btn btn-primary"/>

脚本:

$(".btn").click(function(){
   var gen = document.subscribe.gender[0].checked;
   var gen1 = document.subscribe.gender[1].checked;

   if((gen==false)&&(gen1==false))
   {
     <!--document.getElementById("fn6").style.borderColor = "#ED291F";-->
     alert('Please Select your Gender Type!');
   }
});