Js, jQuery, and easyui implement the specified value Assignment Method for the drop-down box, jqueryeasyui

Js, jQuery, and easyui implement the specified value Assignment Method for the drop-down box, jqueryeasyui

Js implementation:

1. Set the I option to selected to select the I option. The Code is as follows: (id is the drop-down box id)

(1) document. getElementById ("id"). options [I]. selected = true;

(2) document. getElementById ("messagetoid"). selectedIndex = 1; (select 1st options)

2. The Code is as follows:

Document. getElementById ("messagetoid"). value = ""; (select option with null value)

JQuery implementation:

1. By selecting the I option, similar to js Implementation 1, the Code is as follows:

$ ("# Id"). get (0). selectedIndex =

1; (select 1st options)

2. You can use the following two methods to determine the value of option:

(1) $ ("# id"). val ("123"); (select option with the value "123)

(2) $ ("# messagetoid"). attr ("value", ""); (select option with null value)

EasyUI implementation:

$ ('# Id'). combobox ('setvalue', 'A'); (select option with A value of ,)

In the above js, jQuery, and easyui implementations, the method for assigning values to the drop-down box is all the content shared by Alibaba Cloud. I hope to give you a reference and support for the help house.