Several output formats in js

A confirmation box is displayed for confirm (). Click OK to return true; click NO TO RETURN false.

Several output formats in js

1. alert (); pop-up dialog box 2.doc ument. write (); print on the page

3. the prompt (str, default value) dialog box is displayed. You can specify the default value and receive the input value.

Var str = prompt ('enter your age? ', 20); document. write (str); // 20

4. A confirmation box is displayed for confirm (). Click OK to return true. Click No to return false.

Var str = confirm ('Are you sure you want to delete it? '); // Click confirm document. write (str); // true