Add, delete, and value option in jquery

Source: Internet
Author: User

jquery Gets the text and value selected by select:

1. $ ("#select_id"). Change (function () {//code ...}); Adds an event for a select that fires when one of the items is selected

2. Var checktext=$ ("#select_id"). Find ("option:selected"). Text (); Gets the text selected by select

3. Var checkvalue=$ ("#select_id"). Val (); Gets the value of the Select selection

4. Var checkindex=$ ("#select_id"). Get (0). SelectedIndex; Get the index value selected by select

5. Var maxindex=$ ("#select_id option:last"). attr ("index"); Get the maximum index value for select

jquery Add/Remove option items for select:

1. $ ("#select_id"). Append ("<option value= ' value ' >Text</option>"); Append an option to select (dropdown)

2. $ ("#select_id"). Prepend ("<option value= ' 0 ' > Please select </option>"); Inserts an option for the Select (first position)

3. $ ("#select_id option:last"). Remove (); Delete index value maximum option (last) in select

4. $ ("#select_id option[index= ' 0 ']"). Remove (); Delete option with index value of 0 in select (first)

5. $ ("#select_id option[value= ' 3 ']"). Remove (); Delete option value= ' 3 ' in select

5. $ ("#select_id option[text= ' 4 ']"). Remove (); Delete option text= ' 4 ' in select

Empty content:

$ ("#charCity"). empty ();

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