jQuery如果输入[type =“radio”]之前可点击标签没有属性“已检查”然后不添加它，否则什么都不做

please help me to implement this behavior. I would like to check if after click on a label next to radiobutton this radiobutton already has attribute "checked" then it's ok, let's stay in this stage. But if this element hasn't this attribute, then i won't add it. This is what i gave birth:please help me to implement this behavior. I wo