We always need to dialog box in our project because modal is very interesting and specially for GUI. Always we like to use modal for creating data or editing data and also for conformation. So if you think how to set modal in my project then it is very easy you have to just copy bellow example and run in your local you will find result. In this example i provide bootstrap modal example with code so it pretty simple to use.
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<title>Bootstrap modal popup example</title>