$ ("Input[name= ' Radio_name '][checked]"). Val (); Select the value of the selected radio
$ ("#text_id"). focus (function () {//code ...}); Event is triggered when object text_id gets focus
$ ("#text_id"). blur (function () {//code ...}); Event is triggered when the object text_id loses focus
$ ("#text_id"). Select (); Make the Vlaue value of the text box selected
$ ("Input[name= ' radio_name '][value= ' to select Radio Value '").
attr ("Checked", true); Set Radio as selected based on value values
jquery Gets the value value of the checkbox selection
$ ("Input[name= ' Checkbox_name '][checked]");//Select a collection of selected checkbox elements if you want the value you need to traverse this set
$ ($ ("input[name=") Checkbox_name '][checked] ").
each (function () {arrchk+=this.value + ', ';}); /Traverse the collection of the selected checkbox element to get the value
$ ("#checkbox_id"). attr ("checked");//Get the State of a checkbox (has not been checked, return True/false)
$ (" #checkbox_id "). attr (" Checked ", true); Sets the status of a checkbox to be checked (checked=true)
$ ("#checkbox_id"). attr ("checked", false);//Set the status of a checkbox unchecked (checked= FALSE)
$ ("Input[name= ' Checkbox_name ']"). attr
("Checked", $ ("#checkbox_id"). attr ("checked"))//According to 3,4,5, You can analyze and analyze the meaning of this Code
$ ("#text_id"). Val (). Split (",");//return an array with the value of text as ', ' delimited