Jquery obtains the text and value selected by select option.

Jquery radio, checkbox, select, radio, checkbox, select, and related settings

 

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 ();

Obtain the text of the selected select item: var item =$ ("select [name = items] Option [selected]"). text (); or $ ("select [name = items]"). find ("option: Selected "). text ();

The second element in the select drop-down box is the selected value: $ ('# select_id') [0]. selectedindex = 1;

The Select drop-down box value = 'val' element is the current selected item: $ ("select [name = items] Option [value = 'val']"). ATTR ("selected", "selected ");

The second element of the radio Radio group is currently selected: $ ('input [@ name = items] '). get (1 ). checked = true; or $ ('input [name = items] '). ATTR ("checked", '1 ′);

The value = 'val' element of radio is currently selected: $ ('input [name = items] [value = 'val'] '). ATTR ("checked", "checked ");

Get value:

Text Box, text area: $ ("# TXT"). ATTR ("value ");

Multiple choice box checkbox: $ ("input [name = 'checkbox': checked]"). Each (function (){

Var val = $ (this). Val ();

});

Radio Group radio: $ ("input [type = radio] [checked]"). Val ();

Value of select in the drop-down box: $ ('select'). Val ();

Select the selected text value in the drop-down box: $ ("select"). Find ("option: Selected"). Text ();

Control form elements:

Text Box, text area: $ ("# TXT"). ATTR ("value", "); // clear the content

$ ("# TXT"). ATTR ("value", '11'); // fill in the content

Multiple selection box checkbox:
The second element of the checkbox is checked: $ ("input [name = items]"). Get (1). Checked = true; // check
$ ("Input [name = items]"). Get (1). Checked = false; // do not check

Check the value = 'val 'element of the checkbox: $ ("input [name = item] [value = 'val']"). ATTR ("checked", true); or $ ("input [name = item] [value = 'val']"). ATTR ("checked", "checked ");

If ($ ("input [name = item] [value = 'val']"). ATTR ('checked') = true) // you can check whether a check is performed.

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

 

Jquery obtains the value selected by radio.

Code

$ ("Input [name = 'Radio _ name'] [checked]"). Val (); // select the value of the selected radio
$ ("# Text_id"). Focus (function () {// code...}); // event triggered when the object text_id gets the focus
$ ("# Text_id"). Blur (function () {// code...}); // triggered when the focus of the object text_id is lost
$ ("# Text_id"). Select (); // set the vlaue value of the text box to the selected status.
$ ("Input [name = 'Radio _ name'] [value = 'value to select the value of Radio '").
ATTR ("checked", true); // set radio to the selected status based on the value.

Jquery obtains the value selected by the checkbox.

$ ("Input [name = 'checkbox _ name'] [checked]"); // select the set of checked checkbox elements. If you want to get the value, you need to traverse the set.
$ ("Input [name = 'checkbox _ name'] [checked]").
Each (function () {arrchk + = This. Value + ',' ;}); // traverses the set of checked checkbox elements to obtain the value.
$ ("# Checkbox_id"). ATTR ("checked"); // gets the status of a checkbox (true/false if any checkbox is selected)
$ ("# Checkbox_id"). ATTR ("checked", true); // set the status of a checkbox to select (checked = true)
$ ("# Checkbox_id"). ATTR ("checked", false); // set the status of a checkbox to unselected (checked = false)
$ ("Input [name = 'checkbox _ name']"). ATTR
("Checked", $ ("# checkbox_id"). ATTR ("checked"); // you can analyze the meaning of the code based on 3, 4, and 5.
$ ("# Text_id"). Val (). Split (","); // returns an array separated ','.

 

Jquery1.3.2

Isdark: $ ("input [@ type = radio] [name = isdark] [checked]"). Val ()

$ ("Input [name = radioname] [value = radio value]"). ATTR ("checked", "checked ");