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Resolve this please

 
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I have a dropdown when user selects a value in it immediately another dropdown appears.If user clicks on submit without selecting a value in second dropdown,The second dropdown is disappearing and an error message to enter value in first dropdown is being displayed .

My doubt is How to make First Dropdown stable after selecting a value.When user tries to click submit button without entering a value in second dropdown I wanna display an alert message to user saying to enter city value and how to prevent its disaaperance after click on submit button.
 
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Howdy Sreekanth,

Please don't make duplicate posts. The same post is available here, but that thread is the appropriate one.

One of the moderators would lock this thread. Henceforth, please carefully choose a forum.
 
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