JQuery select checkbox radio summary, jquerycheckbox

JQuery select checkbox radio summary, jquerycheckbox

JQuery is a powerful tool, so I need to find the most convenient method.

Select add, delete, modify, and query:

Select query:
1. val value:
$ ("# Selectid"). val (); // the most convenient
2. text value:
$ ("# Selectid option: selected"). text (); // the most convenient
Or $ ("# selectid"). find ("option: selected"). text ()
3. Index value:
$ ("# Selectid"). get (0). selectedIndex; // the most convenient

Select change:
1. val value:
$ ("# Selectid"). val ("xxx"); // the most convenient
Or $ ("# selectid"). attr ("value", "xxx ");
2. text value:
$ ("# Selectid option [text = abc]"). attr ("selected", true); // the most convenient
Or $ ("selectid option: contains (xxx)"). attr ("selected", true );
3. index value:
$ ("# Select option [index = 1]"). attr ("selected", true); // the most convenient

Select increment:
$ ("# Selectid"). append ($ ("<opiton value = '0'> JOHN </option>"); // these two are quite common.
$ ("# Selectid"). prepend ($ ("<opiton value = '0'> JOHN </option> "));

Select Delete:
Clear: $ ("# selectid"). empty (); // general values are cleared before insertion.
Partially delete:
$ ("# Selectid option: gt (0)"). remove (); // because the first row is sometimes cleared by tHead
$ ("# Selectid option [value = xxx]"). remove ();
$ ("# Selectid option [text = xxx]"). remove ();
$ ("# Selectid option [index = xxx]"). remove ();
Select not selected
$ ("# Selectid"). attr ("selected", true );
$ ("# Selectid"). attr ("selected", false );

Radio query:
$ ("# Radioid"). val ();
$ ("# Radioid [name = xxx]"). val ();
$ ("# Radioid [id = xxx]"). val ();
Radio change:
$ ("Radioid [value = xxx]"). attr ("checked", true );
$ ("Radioid: eq (1)"). attr ("checked", true );
Radio deletion:
$ ("Radioid"). remove ();

Checkbox query:
$ ("# Checkboxid"). val ();
$ ("# Checkboxid [name = xxx]"). val ();
$ ("# Checkboxid [id = xxx]"). val ();
Change Checkbox:
$ ("Checkboxid [value = xxx]"). attr ("checked", true );
$ ("Checkboxid: eq (1)"). attr ("checked", true );
$ (": Button"). bind ("click", function (){
$ (": Checkbox"). each (function (){
// $ (This). attr ("checked ",! $ (This). attr ("checked"); click the checkbox button to select it;
// $ (This). attr ("checked", true); click the checkbox button to select all;
$ (This). attr ("checked", false); no checkbox is selected;
// If ($ (this). attr ("checked") = true) {alert ($ (this). val ()} selected value
// If ($ (this). attr ("checked") = false) {alert ($ (this). val ()} unselected Value
})
})
})
Checkbox deletion:
$ ("Checkboxid"). remove ();

Txt text box query:
$ ("# Txtid"). val ();
Modify the txt text box:
$ ("# Txtid"). val ("xx ");
Delete txt text box:
$ ("# Txtid"). val ("");

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 ();
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
$ ("<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 ). selected = true; & amp; #4 ...... remaining full text>

How does Jquery obtain the radio select checkbox text box?

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