Hello, i just want to ask how to assign a superscript text in a variable. Im trying to use `.sup()`

method of javascript but it displays literally `'<sup>2</sup>'`

.

i want to do something like this. But it wont work.

```
togchangeax(){
if (this.axis==true){
this.formula = '(x-h)'+'2'.sup()+' = 4c(y-k)';
}else{
this.formula = '(y-k)'+'2'.sup()+' = 4c(x-h)';
}
}
```

Thanks in advance.