Web Reference: Aug 5, 2025 · A dialogue box in JavaScript is a pop-up message that appears on the screen when the user interacts with the webpage. These boxes help provide feedback, ask for confirmation, or collect data from the user. A prompt box is often used if you want the user to input a value before entering a page. When a prompt box pops up, the user will have to click either "OK" or "Cancel" to proceed after entering an input value. JavaScript supports three important types of dialog boxes. These dialog boxes can be used to raise and alert, or to get confirmation on any input or to have a kind of input from the users. Here we will discuss each dialog box one by one.
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