Jquery radio value, checkbox value, select value and selection

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 Group radio: $ ("input [@ type = radio]"). ATTR ("checked", '2'); // set the project with value = 2 as the currently selected item
Drop-down box select: $ ("# Sel"). ATTR ("value", '-sel3'); // set the value =-sel3 project to the currently selected item
$ ("<Option value = '1'> 1111 </option> <option value = '2'> 2222 </option> "). appendto ("# Sel") // Add the option in the drop-down box
$ ("# Sel"). Empty (); // clear the drop-down list

 

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