JQuery determines whether the radio (radio button) is selected and summarizes the method of obtaining the selected value_jquery

1. Determine the selection by obtaining the selected value

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Radio cannot be judged by "checked" equality, it can only be judged by true

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2. Use the checked attribute to determine the selection

Radio cannot be judged by "checked" equality, it can only be judged by true

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3. jquery gets the value of the radio button

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$("input[name='items']:checked").val();

Another: Determine whether the radio is selected and get the selected value

As shown below:

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function checkradio(){
var item = $(":radio:checked");
var len=item.length;
if(len>0){
alert("yes--the selected value is:" $(":radio:checked").val());
}
}

4. Get the value of a set of radio selected items

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var item = $('input[name=items][checked]').val();

5. Set the radio button to be selected

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$("input[type=radio]").attr("checked",'2');//Set the item with value=2 as the currently selected item