如何改变下划线颜色 <Select/>通过设置类

Question

const styles = {
 inkbar: {
  '&:after': {
   backgroundColor: 'red',
   height: '2px'
 }
},
 underline:{
 '&:before':{
  height:'2px',
  backgroundColor:'green'
}
}
};

  <Select
      fullWidth
      value={this.props.value}
      onChange={this.props.onChange}
      input={
        <Input
          classes={{    
            inkbar:this.props.classes.inkbar,
            underline:this.props.classes.underline}}
        />
      }
    >
      {this.props.children}
    </Select>)

But when I check code with react tool, I found the classes of <Input> component did not change. Does anyone know how to change the color of inkbar and underline in <Select> component?

I use Material-ui v1.0.0-beta

---

I have soloved by setting className. But I still want to know why changing classes does not work.

Answer 1

而不是classes使用className ，有关更多信息，请检查此链接