The value and value assignment of jquery's main controls, including Textbox, button, lable, radio, checkbox, and selected

Textbox:
VaR STR = $ ('# TXT'). Val ();

 $ ('# TXT'). Val ("set LBL value ");

 

// Text box, text area:

$ ("# Text_id"). ATTR ("value", ''); // clear the content

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

 

Lable: 

VaR STR = $ ('# lbl'). Text ();

$ ('# Lbl'). Text ("set LBL value ");

 

  

VaR valradio
= $ ("Input [@ type = radio] [@ checked]"). Val ();

  

VaR item
= $ ('Input [@ name = items] [@ checked] '). Val ();

 

 

VaR checkboxval
= $ ("# Checkbox_id"). ATTR ("value ");

 

  

VaR selectval
= $ ('# Select_id'). Val ();

 

// Multiple choice box checkbox:

$ ("# Chk_id"). ATTR ("checked ",'');

// Make it unchecked

$ ("# Chk_id"). ATTR ("checked", true );

// Select

If ($ ("# chk_id"). ATTR ('checked') = true)

// Determine whether selected

  

Radio Group Radio:

$ ("Input [@ type = radio]"). ATTR ("checked", '2 ');

// Set the project with value = 2 as the currently selected item

 

// Select from the drop-down list:

$ ("# Select_id"). ATTR ("value", 'test ');

// Set the project with value = test as the selected item

$ ("<Option value = 'test'> test </option> <option value = 'test2'> Test2 </option>"). appendto ("# select_id ")

// Add the option in the drop-down list

$ ("# Select_id"). Empty (); // clear the drop-down list

 

Obtains the value of a set of Radio selected items named (items ).

VaR item
= $ ('Input [@ name = items] [@ checked] '). Val (); // if not selected
Then Val () = undefined

 

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;

 

// Reset the form

 

$ ("Form"). Each (

  Function(){ .

     Reset();

}