1 In jquery, radio is selected or not. $ ("# Rdo1"). ATTR ("checked", "checked"); $ ("# rdo1"). removeattr ("checked ");
2. Select $ ("input [name = jizai]: eq (0 )"). ATTR ("checked", 'checked'); 3 judge whether it is selected: Alert ($ ("input [name = bankid]: checked "). size ()> 0); 4 traverse radio: $ ("input [name = bankid]: checked "). each (function () {$ (this ). removeattr ("checked") ;}); 5 jquery radio: $ ("input [name = rating_2]"). get (5 ). checked = true; 6. Obtain the value var item =$ ('input [name = jizai]: checked') of the selected radio '). val ();
Select Operation:
Traversal option values:
$ ("# Select_left"). Children ("option"). Each (function () {console. Log (this. Value );});
Traverse selected:
$ ("# select_left "). children ("option "). each (function () {This. selected = true; jquery (this ). ATTR ("selected", false ). appendto ($ ("# select_right") ;});