Conditionally applying css not working in React JS using Typescript

Question

I have the following code whereas onclick I should make the Box stay highlighted with the black border.

interface BigButtonProps {


onClick(): void;
  Title: string;
  Description?: string;
  startIcon?: React.ElementType;
}

const BigButton: FC<BigButtonProps> = (props: BigButtonProps, { active }) => {
  const [isClicked, setClicked] = useState(false);
  const clickMe = () => {
    setClicked(!isClicked);
    console.log("say hello");
  };
  const SvgIconStyles: CSS.Properties = {
    display: "block",
  };
  const BoxStyles: CSS.Properties = {
    border: "1.5px solid black",
  };

  const BoxStylesActive: CSS.Properties = {
    border: "1.5px solid black",
  };
  return (
    <Box
      sx={{
        height: {
          xs: "45px",
          md: "100px",
        },
        width: {
          xs: "45px",
          md: "300px",
        },
    borderRadius: "10px",

    boxShadow: "0 2px 3px 2px rgba(0, 0, 0, .125)",
    display: "flex",
    alignItems: "center",
    justifyContent: "center",
    flexDirection: "column",
    ":hover": {
      border: "1.5px solid blue",
    },
  }}
  className={classNames("BoxStyles", { BoxStylesActive: isClicked })}
  onClick={() => {
    clickMe();
  }}
>
  <Typography variant="h1">{props.Title}</Typography>

  <Typography variant="subtitle1">{props.Description}</Typography>
  <SvgIcon
    component={CheckCircleIcon}
    sx={{
      display: "block",
    }}
  />
</Box>


);
};

export default BigButton;

When I click on the button it should change the border color to solid black. When I do CSS active it does change on click but doesn't remain changed to black. So I have to apply CSS conditionally so I did create the CSS methods with the property type CSS.Properties; I'm using typescript and this is a react component I'm working on with. I'm not really sure what am I doing wrong here?

Hmm I don't see how that'd apply the styles that are in local variables. BoxStyles and BoxStylesActive are just local variables and are not actual classes. — Nick
– Nick, Commented Oct 10, 2021 at 23:13
This question is badly written. You should provide a minimal code example where you cut out unneeded information. Also, please provide used libraries next time like sx or classNames(). I know those, because I worked in the past with those, but many people don't. — Sir hennihau
– Sir hennihau, Commented Oct 11, 2021 at 8:00

Sir hennihau · Accepted Answer · 2021-10-11 07:58:42Z

2

You can try something like

<Box styles={isClicked ? BoxStylesActive : BoxStyles}>
// ...

Notice that BoxStylesActive and BoxStyles are the same in your pasted code. So don't be surprised if you see no changes.

<Box sx={{border: isClicked ? "1.5px solid black" : none}}>
// ...

This can be used alternatively.

You are mixing sx prop and styles here. Also your BoxStylesActive is an object and no css class. So using classNames() won't have an effect on it.

answered Oct 11, 2021 at 7:58

Sir hennihau

1,8747 gold badges24 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Conditionally applying css not working in React JS using Typescript

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related