---
# System prepended metadata

title: '**Javascript tutorial note**'

---

# **Javascript tutorial note**

**Variable**
is a temporary container to store data into the computer memory for further computation.

```
<!DOCTYPE html>
<html>
    <head>
        <link rel="stylesheet" href="./css//style.css"/>
    </head>
    <body>

        <p>Plus Answer: <span id="plus"></span></p>
        <p>Minus Answer: <span id="minus"></span></p>
        <button>Click me</button>


        <script>
            const plusAnswer = 2 + 5
            const minusAnswer = 25 - 6
           

            

           

            document.getElementById('plus').innerHTML = plusAnswer
            document.getElementById('minus').innerHTML = minusAnswer
        </script>
    </body>
</html>
```


**Conditions**
This is a way for the computer to tke decisions based on the truthfulness and falsefullness of an event. For example, when the given password is a correct, the computer should log the user in.

```
const age = 710

if(age == 17){
    document.getElementById("desc").innerHTML = "Come back next year"
}else if(age < 17){
    document.getElementById("desc").innerHTML = "Sorry, you are too young to drive"
}else if(age >= 70){
    document.getElementById("desc").innerHTML = "Sorry, you are too old to drive"
}else{
    document.getElementById("desc").innerHTML = "Congratulations, you can drive"
}




```