A prompt box allows the user to enter input by providing a text box.
In web development, a prompt box is a dialog box that pops up on a webpage to prompt the user to input some information. It typically contains a message, an input field for the user to enter their response, and buttons to confirm or cancel the action. Prompt boxes are often used to gather user input or to request confirmation for an action.
For example, you might use a prompt box to ask the user for their name before proceeding to a personalized section of a website, or to confirm whether they really want to delete an item from a shopping cart.
In JavaScript, you can create a prompt box using the prompt() function. Here’s a simple example:
var userName = prompt("Please enter your name:", "John Doe");
if (userName != null) {
alert("Hello " + userName + "! Welcome to our website.");
} else {
alert("You cancelled the prompt.");
}
In this example, the prompt box will display a message asking the user to enter their name. The default value in the input field is “John Doe”. If the user enters their name and clicks “OK”, the userName variable will store the input value, and an alert will greet the user by name. If the user clicks “Cancel” or leaves the input field blank and clicks “OK”, the prompt() function will return null, and an alert will notify the user that they cancelled the prompt.