What is a prompt box in JavaScript?

What is a prompt box in JavaScript?

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. If the user clicks “OK” the box returns the input value. If the user clicks “Cancel” the box returns null.

How do you make a box in JavaScript?

Another method to create an input box in Javascript is to use an HTML input box and then reference that in JavaScript and get its value. In the above code, first, we defined an input box and then a button with the anime of Save. We then referenced the code. js file using the script tag.

How do you write hello world in an alert box?

Creating the “Hello, World!” Program

1. alert(“Hello, World!”);
2. log(“Hello, World!”);
3. let name = prompt(“What is your name?”);
4. “Hello, ” + name + “!”
5. alert(“Hello, ” + name + “!”);
6. “Hello, ” + name + “!”
7. log(“Hello, ” + name + “!”);

Where is the correct place to insert a JavaScript?

JavaScript in body or head: Scripts can be placed inside the body or the head section of an HTML page or inside both head and body. JavaScript in head: A JavaScript function is placed inside the head section of an HTML page and the function is invoked when a button is clicked.

How do you make an input box?

To create a text box (also called input box), use the tag and set the type attribute to “text”. See table 3 for two examples. In the first example, our HTML code starts the form with the tag. Inside this form tag, we placed an input box by using the tag.

How do you write hello in JavaScript?

1. Using console. log() console.
2. Using alert() The alert() method displays an alert box over the current window with the specified message. Source Code // the hello world program alert(“Hello, World!”
3. Using document.write() document. write() is used when you want to print the content to the HTML document.

What is alert () and prompt () in JavaScript?

alert. shows a message. prompt. shows a message asking the user to input text. It returns the text or, if Cancel button or Esc is clicked, null .

Should Scripts go head or body?

If your is not placed inside a function, or if your script writes page content, it should be placed in the body section. It is a good idea to place scripts at the bottom of the element. This can improve page load, because script compilation can slow down the display.

What is the correct way to write JavaScript array?

Using an array literal is the easiest way to create a JavaScript Array. Syntax: const array_name = [item1, item2.]; It is a common practice to declare arrays with the const keyword.