jQuery gets the Value value selected by Radio and CheckBox (sample code)_jquery

$("input[name='radio_name'][checked]").val(); //Select the Value of the selected Radio
$("#text_id").focus(function(){ //code...}); //The event is triggered when the object text_id gets focus
$("#text_id").blur(function(){//code...}); //The event is triggered when the object Triggered when text_id loses focus
$("#text_id").select(); //Make the Vlaue value of the text box selected
$("input[name='radio_name'][value='To Select the Value value of Radio'").
attr("checked",true); //Set Radio to the selected state according to the Value value

jQuery gets the Value value selected by CheckBox

$("input[name='checkbox_name'][checked]"); //Select the collection of selected CheckBox elements. If you want to get the Value value, you need to traverse the collection
$($("input[name ='checkbox_name'][checked]")).
each(function(){arrChk =this.value ',';});//Traverse the collection of selected CheckBox elements to get the Value value
$( "#checkbox_id").attr("checked"); //Get the status of a CheckBox (whether it is selected, return true/false)
$("#checkbox_id").attr("checked",true) ; //Set the status of a CheckBox to be checked (checked=true)
$("#checkbox_id").attr("checked",false); //Set the status of a CheckBox to be unchecked (checked=false)
$("input[name='checkbox_name']").attr
("checked",$("#checkbox_id").attr("checked"));//According to 3,4,5 Article, you can analyze the meaning of this code
$("#text_id").val().split(","); //Separate the Value value of Text with ',' and return an array