传递道具到 MUI 样式

This answer was written prior to version 4.0 severely out of date!

Seriously, if you're styling a function component, use makeStyles.

The answer from James Tan is the best answer for version 4.x

Anything below here is ancient:

When you're using withStyles, you have access to the theme, but not props.

Please note that there is an open issue on Github requesting this feature and some of the comments may point you to an alternative solution that may interest you.

One way to change the background color of a card using props would be to set this property using inline styles. I've forked your original codesandbox with a few changes, you can view the modified version to see this in action.

Here's what I did:

1. Render the component with a backgroundColor prop:

// in index.js
if (rootElement) {
render(<Demo backgroundColor="#f00" />, rootElement);
}

2. Use this prop to apply an inline style to the card:

    function SimpleCard(props) {
// in demo.js
const { classes, backgroundColor } = props;
const bull = <span className={classes.bullet}>•</span>;
return (
<div>
<Card className={classes.card} style=\{\{ backgroundColor }}>
<CardContent>
// etc

Now the rendered Card component has a red (#F00) background

Take a look at the Overrides section of the documentation for other options.

Deleted the old answer, because it's no reason for existence.

Here's what you want:

import React from 'react';
import { makeStyles } from '@material-ui/core';


const useStyles = makeStyles({
firstStyle: {
backgroundColor: props => props.backgroundColor,
},
secondStyle: {
color: props => props.color,
},
});


const MyComponent = ({children, ...props}) =>{
const { firstStyle, secondStyle } = useStyles(props);
return(
<div className={`${firstStyle} ${secondStyle}`}>
{children}
</div>
)
}


export default MyComponent;

Now you can use it like:

<MyComponent color="yellow" backgroundColor="purple">
Well done
</MyComponent>

Official Documentation

Here's the official Material-UI demo.

And here's a very simple example. It uses syntax similar to Styled Components:

import React from "react";
import { makeStyles, Button } from "@material-ui/core";


const useStyles = makeStyles({
root: {
background: props => props.color,
"&:hover": {
background: props => props.hover
}
},
label: { fontFamily: props => props.font }
});


export function MyButton(props) {
const classes = useStyles(props);
return <Button className={classes.root} classes=\{\{ label: classes.label }}>My Button</Button>;
}




// and the JSX...
<MyButton color="red" hover="blue" font="Comic Sans MS" />

This demo uses makeStyles, but this feature is also available in styled and withStyles.

This was first introduced in @material-ui/styles on Nov 3, 2018 and was included in @material-ui/core starting with version 4.

import React from "react";
import { makeStyles } from "@material-ui/styles";
import Button from "@material-ui/core/Button";


const useStyles = makeStyles({
root: {
background: props => props.color,
"&:hover": {
background: props => props.hover
}
}
});


export function MyButton(props) {
const classes = useStyles({color: 'red', hover: 'green'});
return <Button className={classes.root}>My Button</Button>;
}

Solution for how to use both props and theme in material ui :

const useStyles = props => makeStyles( theme => ({
div: {
width: theme.spacing(props.units || 0)
}
}));


export default function ComponentExample({ children, ...props }){
const { div } = useStyles(props)();
return (
<div className={div}>{children}</div>
);
}

Here the Typescript solution:

import React from 'react';
import { makeStyles } from '@material-ui/core/styles';
import Button from '@material-ui/core/Button';
import {Theme} from '@material-ui/core';


export interface StyleProps {
height: number;
}


const useStyles = makeStyles<Theme, StyleProps>(theme => ({
root: {
background: 'green',
height: ({height}) => height,
},
}));


export default function Hook() {


const props = {
height: 48
}


const classes = useStyles(props);
return <Button className={classes.root}>Styled with Hook API</Button>;
}

If you want to play with it, try it in this CodeSandbox

Solution for TypeScript with Class Component:

type PropsBeforeStyle = {
propA: string;
propB: number;
}


const styles = (theme: Theme) => createStyles({
root: {
color: (props: PropsBeforeStyle) => {}
}
});


type Props = PropsBeforeStyle & WithStyles<typeof styles>;


class MyClassComponent extends Component<Props> {...}


export default withStyles(styles)(MyClassComponent);

Was missing from this thread a props use within withStyles (and lead to think it wasn't supported)

But this worked for me (say for styling a MenuItem):

const StyledMenuItem = withStyles((theme) => ({
root: {
'&:focus': {
backgroundColor: props => props.focusBackground,
'& .MuiListItemIcon-root, & .MuiListItemText-primary': {
color: props => props.focusColor,
},
},
},
}))(MenuItem);

And then use it as so:

 <StyledMenuItem focusColor={'red'} focusBackground={'green'}... >...</StyledMenuItem>

I spent a couple of hours trying to get withStyles to work with passing properties in Typescript. None of the solutions I found online worked with what I was trying to do, so I ended up knitting my own solution together, with snippets from here and there.

This should work if you have external components from, lets say Material UI, that you want to give a default style, but you also want to reuse it by passing different styling options to the component:

import * as React from 'react';
import { Theme, createStyles, makeStyles } from '@material-ui/core/styles';
import { TableCell, TableCellProps } from '@material-ui/core';


type Props = {
backgroundColor?: string
}


const useStyles = makeStyles<Theme, Props>(theme =>
createStyles({
head: {
backgroundColor: ({ backgroundColor }) => backgroundColor || theme.palette.common.black,
color: theme.palette.common.white,
fontSize: 13
},
body: {
fontSize: 12,
},
})
);


export function StyledTableCell(props: Props & Omit<TableCellProps, keyof Props>) {
const classes = useStyles(props);
return <TableCell classes={classes} {...props} />;
}

It may not be the perfect solution, but it seems to work. It's a real bugger that they haven't just amended withStyles to accept properties. It would make things a lot easier.

In MUI v5, this is how you access the props when creating the style object using styled():

import { styled } from "@mui/material";


const StyledBox = styled(Box)(({ theme, myColor }) => ({
backgroundColor: myColor,
width: 30,
height: 30
}));

For folks who use typescript, you also need to add the prop type to the CreateStyledComponent:

type DivProps = {
myColor: string;
};


const Div = styled(Box)<DivProps>(({ theme, myColor }) => ({
backgroundColor: myColor,
width: 30,
height: 30
}));

<StyledBox myColor="pink" />

If you want to use system props in your custom component like Box and Typography, you can use extendSxProp like the example below:

import { unstable_extendSxProp as extendSxProp } from "@mui/system";


const StyledDiv = styled("div")({});


function DivWithSystemProps(inProps) {
const { sx } = extendSxProp(inProps);
return <StyledDiv sx={sx} />;
}

<DivWithSystemProps
bgcolor="green"
width={30}
height={30}
border="solid 1px red"
/>

Explanation

• styled("div")(): Add the sx props to your custom component
• extendSxProp(props): Gather the top level system props and put it inside the sx property:

const props = { notSystemProps: true, color: 'green', bgcolor: 'red' };
const finalProps = extendSxProp(props);


// finalProps = {
//   notSystemProps: true,
//   sx: { color: 'green', bgcolor: 'red' }
// }

To use with typescript, you need to add the type for all system properties:

type DivSystemProps = SystemProps<Theme> & {
sx?: SxProps<Theme>;
};


function DivWithSystemProps(inProps: DivSystemProps) {
const { sx, ...other } = extendSxProp(inProps);
return <StyledDiv sx={sx} {...other} />;
}

@mui v5

You can use styled() utility (Make sure that you're importing the correct one) and shouldForwardProp option. In the following example SomeProps passed to a div component

import { styled } from '@mui/material'


interface SomeProps {
backgroundColor: 'red'|'blue',
width: number
}
const CustomDiv  = styled('div', { shouldForwardProp: (prop) => prop !== 'someProps' })<{
someProps: SomeProps;
}>(({ theme, someProps }) => {
return ({
backgroundColor: someProps.backgroundColor,
width: `${someProps.width}em`,
margin:theme.spacing(1)
})
})

Here's another way of dynamically passing props to hook's API in MUI v5

import React from "react";
import { makeStyles } from "@mui/styles";
import { Theme } from "@mui/material";


interface StyleProps {
height: number;
backgroundColor: string;
}


const useStyles = makeStyles<Theme>((theme) => ({
root: ({ height, backgroundColor }: StyleProps) => ({
background: backgroundColor,
height: height
})
}));


export default function Hook() {
const props = {
height: 58,
backgroundColor: "red"
};


const classes = useStyles(props);
return (
<button className={classes.root}>
another way of passing props to useStyle hooks
</button>
);
}

here's the codesandbox https://codesandbox.io/s/styles-with-props-forked-gx3bf?file=/demo.tsx:0-607

Here's 2 full working examples of how to pass props to MUI v5 styles. Either using css or javascript object syntax.

With css syntax:

import { styled } from '@mui/system'


interface Props {
myColor: string
}


const MyComponent = ({ myColor }: Props) => {
const MyStyledComponent = styled('div')`
background-color: ${myColor};


.my-paragraph {
color: white;
}
`
return (
<MyStyledComponent >
<p className="my-paragraph">Hello there</p>
</MyStyledComponent >
)
}


export default MyComponent

Note that we define MyStyledComponent within MyComponent, making the scoped props available to use in the template string of the styled() function.

Same thing with javascript object syntax:

import { styled } from '@mui/system'


const MyComponent = ({ className }: any) => {
return (
<div className={className}>
<p className="my-paragraph">Hello there</p>
</div>
)
}


interface Props {
myColor: string
}


const MyStyledComponent = styled(MyComponent)((props: Props) => ({
backgroundColor: props.myColor,
'.my-paragraph': { color: 'white' },
}))


export default MyStyledComponent

For this second example, please note how we pass the className to the component we want to apply the styles to. The styled() function will pass a className prop with the styles you define. You typically want to apply that to your root element. In this case the div.

Result:

I'm sure there's other variations of how to do this, but these two are easy to implement and understand.

You might need to memoize the calculated styles, and maybe not use this approach if your props changes a lot. I don't think it's very performant.

Using styled-components, sometimes you only want to apply styles if the prop is passed, in such cases you can do something like this (remove : {foo: boolean} if not using TypeScript):

const SAnchor = styled("a", {
shouldForwardProp: prop => prop !== "foo",
})(({foo = false}: {foo: boolean}) => ({
...(foo && {
color: "inherit",
textDecoration: "none",
}),
}));

Object spread source

shouldForwardProp docs

@mui v5

I use theme and prop from JSON object

const Answerdiv = styled((props) => {
const { item_style, ...other } = props;
return <div  {...other}></div>;
})(({ theme, item_style }) => {
for(var i of Object.keys(item_style)){
item_style[i] =Object.byString(theme,item_style[i])|| item_style[i];
}
return (item_style)
});

component use

<Answerdiv item_style={(item_style ? JSON.parse(item_style) : {})}>

for Object.byString

Object.byString = function(o, s) {
s = s.replace(/\[(\w+)\]/g, '.$1'); // convert indexes to properties
s = s.replace(/^\./, '');           // strip a leading dot
var a = s.split('.');
for (var i = 0, n = a.length; i < n; ++i) {
var k = a[i];
if (k in o) {
o = o[k];
} else {
return;
}
}
return o;
}