How to change to default the selected dropdown
99817
How do I programmatically set the value of a select box element using JavaScript?
14109
Checkboxes: how do I set the default values or show the user defined values using Form API?
8002
Change the selected value of a drop-down list with jQuery
112921
Check if option is selected with jQuery, if not select a default
122433
Show/Hide  dropdown, with jQuery, based on value
38509
Rails - Default selected radiobutton in SimpleForm :collection
24824
Dynamic select list in the form (dependent dropdown)
85738
Auto resizing the SELECT element according to selected OPTION's width
75108
wp_customize_image_control default value
33846
I use jQuery to alter the exposed form select options. Got error: "An illegal choice has been detected." How to bypass validation?
65828
Hide/Show columns in Custom List based on dropdown selection
65528
Get selected value of a dropdown's item using jQuery
115026
How to change default images of CheckBox
10826
how to change an element type using jquery
61088
How to style a select tag's option element?
140148
Redirect automatically when selecting an item from a select drop-down list
122842
How to change the background image through the tag "selected"