Use the alert() function to display a message to the user that requires their attention. This alert box will have the OK button to close the alert box. The alert() function takes a paramter of any type e.g., string, number, boolean etc.
Type “alert (“Hey, ” + name + “!”);”. This line of code will add the variable “name” to the word “Hey, “(with the space at the end), and then add “!” to end the sentence (not required). For example, if the user inputs “Trevor” as the value of the variable “name”, the alert will say “Heya, Trevor!”.
What is the use of alert () method?
The alert() method is used to show an alert box on the browser window with some message or warning. We can use it as a message or as a warning for the user. Approach: To show an alert on the browser window, we make a button. When we click on the button, a click event listener is called that calls a function.
What is the difference between window alert and alert?
2 Answers. Because window is the global object, you can call an alert either by it’s shorthand: alert( ‘Hello!’ ); or by referencing the global object specifically: window. alert( ‘Hello!’
What is alert method?
The alert() method displays an alert box with a specified message and an OK button. An alert box is often used if you want to make sure information comes through to the user. Note: The alert box takes the focus away from the current window, and forces the browser to read the message.
What is the use of alert () function?