JQuery is used to simplify operations on form elements such as radio, checkbox, select, and radio, and jquerycheckbox.

JQuery is used to simplify operations on form elements such as radio, checkbox, select, and radio, and jquerycheckbox.

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 Group is the currently selected value. frontend framework sharing
$ ('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 share with the front-end framework of the 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

How does Jquery obtain the radio select checkbox text box?

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 Group is the currently selected value.
$ ('Input [@ name = items] '). get (1 ). checked = true; 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 element:
Text Box, text area: $ ("# txt"). attr ("value", ''); // clear the content
$ ("# Txt "). attr ("value", '11'); // multiple-choice box for filling content checkbox: $ ("# chk1 "). attr ("checked", ''); // do not check
$ ("# Chk2"). attr ("checked", true); // check
If ($ ("# chk1 "). attr ('checked') = undefined) // determines whether the radio group radio has been checked: $ ("input [@ type = radio]"). attr ("checked", '2'); // set the project with value = 2 to the selected one (incorrect)
$ ("Input [@ name = radio_s] [@ value = 16]"). attr ("checked", true); (tested) drop-down box select: $ ("# sel "). attr ("value", '-sel3'); // you can specify the value =-sel3 as the 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 box $ ("# select1") [0]. options (index ). sele ...... remaining full text>

When dragging jquery ui sortable, the selected states of radio and checkbox cannot be saved.

Jquery radio value, checkbox value, select value, radio selected, checkbox selected, select selected, and related to obtain 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 Group is the currently selected value.
$ ('Input [@ name = items] '). get (1 ). checked = true; 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 element:
Text Box, text area: $ ("# txt"). attr ("value", ''); // clear the content
$ ("# Txt "). attr ("value", '11'); // multiple-choice box for filling content checkbox: $ ("# chk1 "). attr ("checked", ''); // do not check
$ ("# Chk2"). attr ("checked", true); // check
If ($ ("# chk1 "). attr ('checked') = undefined) // determines whether the radio group radio has been checked: $ ("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 remaining full text...>