Web Reference: alert ("I am an alert box!"); A confirm box is often used if you want the user to verify or accept something. When a confirm box pops up, the user will have to click either "OK" or "Cancel" to proceed. If the user clicks "OK", the box returns true. If the user clicks "Cancel", the box returns false. window.confirm (" sometext "); Sep 8, 2020 · Interaction: alert, prompt, confirm As we’ll be using the browser as our demo environment, let’s see a couple of functions to interact with the user: alert, prompt and confirm. alert This one we’ve seen already. It shows a message and waits for the user to press “OK”. For example: When you are learning JavaScript, you need a quick way to communicate with the user: display a message, ask a question, or request a yes/no decision. JavaScript provides three built-in functions for this purpose: alert(), prompt(), and confirm().
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