Jquery radio value, checkbox value, select value and selection (reference)

Jquery radio, checkbox, select, radio, checkbox, select, and related
Obtains the value of a set of Radio selected items.
VaR item = $ ('input [@ name = items] [@ checked] '). Val ();
Obtain the text of the selected select item.
VaR item = $ ("select [@ name = items] Option [@ selected]"). Text ();
The second element in the select drop-down box is the selected value.
$ ('# Select_id') [0]. selectedindex = 1;
The second element of the radio Radio Group is the currently selected value.
$ ('Input [@ name = items] '). Get (1). Checked = true;

Get value:

Text Box, text area: $ ("# TXT"). ATTR ("value ");
Multiple choice box checkbox: $ ("# checkbox_id"). ATTR ("value ");
Radio Group radio: $ ("input [@ type = radio] [@ checked]"). Val ();
Drop-down box select: $ ('# sel'). Val ();

Control form elements:
Text Box, text area: $ ("# TXT"). ATTR ("value", ''); // clear the content
$ ("# TXT"). ATTR ("value", '11'); // fill in the content

Multiple choice box checkbox: $ ("# CHK1"). ATTR ("checked", ''); // do not check
$ ("# CHK2"). ATTR ("checked", true); // check
If ($ ("# CHK1"). ATTR ('checked') = undefined) // you can check whether the checked has been checked.

radio: $ ("input [@ type = radio]"). ATTR ("checked", '2'); // select $ ("# Sel") from the
drop-down box "). ATTR ("value", '-sel3 '); // set the project value =-sel3 as the currently selected item
$ (" 1111 2222 "). appendto ("# Sel") // Add option in the drop-down box
$ ("# Sel "). empty (); // clear the drop-down list