How to Code an Alert with a Variable Using Javascript

Alerts with variables are among the most useful things in javascript coding. You can use them to refer to someone by their name, to make a mini MadLibs game, or even for showing quiz results. This article will show you how to make a...

Part 1 of 2:

Setting Up the Variable

Write the first line of code. Type "var username = prompt ('What is your name?');". Replace "username" with whatever you want to call your variable. Replace "What is your name?" with whatever you want to ask for.

Part 2 of 2:

Making the Alert

How to Code an Alert with a Variable Using Javascript Picture 1

Write the next line of code. 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!". You can use any message you want, though. If your variable is "favoriteColor" and "Blue" is the value, for instance, you can have the alert say "Blue is a very nice color! "
Add in more variables if you want. Try to make a one or two sentence biography.