JQuery learning notes -- jqueryradio value, checkbox value, select value, radio selected, checkbox

Obtain the value of a set of radio selected items varitem $ (& amp; #39; input [@ nameitems] [@ checked] & amp; #39 ;). val (); get the text varitem $ (& quot; select [@ nameitems] option [@ selected] & quot;) of the selected select item ;). text (); sel

 

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;

 

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

$ ("11112222"). AppendTo (" # sel ") // Add the option in the drop-down box

$ ("# Sel"). empty (); // clear the drop-down list

 

From Hurry's column