How do I access css/scss with react? - css

Question

I have a react component where I am trying to change the background color of the css when clicking the div.
I know you can set the color in the component, but I am using this component many times, and don't to make multiple component files with just a different color, and even if I did, I am curious besides the fact.
How can I access (or even console.log to figure it out on my own) the css file and its properties through the component? Thanks ahead of time.

Answer 1

If you want to keep all background-color styles in your .css/.scss file, you will need to have a good className strategy to link the styles to your components. Here is my suggestion:
styles.scss
.blue {
background-color: blue;
&.clicked {
background-color: red;
}
}
Container.js
import React from 'react';
import ClickableDiv from './ClickableDiv.js';
const Container = () => (
<ClickableDiv className="blue">
<p>This is my text.</p>
</ClickableDiv>
);
export default Container;
ClickableDiv.js
import React, { Component } from 'react';
class ClickableDiv extends Component {
constructor() {
super();
this.state = { clicked: false };
this.handleDivClick = this.handleDivClick.bind(this);
}
handleDivClick() {
this.setState({ clicked: true });
}
render() {
const divClassName = [this.props.classname];
if (this.state.clicked) divClassName.push('clicked');
return (
<div className={divClassName.join(' ').trim()} onClick={this.handleDivClick}>
{this.props.children}
</div>
);
}
}
export default ClickableDiv;
Rendered Markup
Unclicked:
<div class="blue"><p>This is my text.</p></div>
Clicked:
<div class="blue clicked"><p>This is my text.</p></div>

Answer 2

You can pass in the desired background color as a prop, and use internal state with an onClick handler.
Container.js
import React from 'react';
import ClickableDiv from './ClickableDiv';
const Container = () => (
<ClickableDiv backgroundColor="#FF0000">
<p>This is my text.</p>
</ClickableDiv>
);
export default Container;
ClickableDiv.js
import React, { Component } from 'react';
class ClickableDiv extends Component {
constructor() {
super();
this.state = {};
this.handleDivClick = this.handleDivClick.bind(this);
}
handleDivClick() {
const { backgroundColor } = this.props;
if (backgroundColor) this.setState({ backgroundColor });
}
render() {
const { backgroundColor } = this.state;
return (
<div style={{ backgroundColor }} onClick={this.handleDivClick}>
{this.props.children}
</div>
);
}
}
export default ClickableDiv;

Answer 3

Better to make an external css file and write your css code in that file and just import that one in index.html