我添加了 ColorpickerBackground 组件来更改应用程序的主体背景颜色。效果很好...
我的问题是,当我添加新组件 ColorpickerNavbar 来更改引导程序(4)导航栏的颜色时,它无法正常工作。 保存后颜色会更改,但目标是查看实时更改...
!important
是必需的,但是我不知道如何设置它,如果我必须在react组件中设置它。...
这是我的导航栏的html:
<nav class="navbar navbar-expand-lg navbar-custom navbar-dark bg-dark navbar-fixed-top" style= "background: <%= prefered_navbar_color %>!important;" id="my_nav">
...
</nav>
这是颜色选择器出现的html:
<%= f.hidden_field :navbar_color %>
<%= react_component('ColorpickerNavbar', { navbar_color: prefered_navbar_color, selector: 'customization_navbar_color'} ) %>
</div>
ColorpickerNavbar.js
import React from "react"
import PropTypes from "prop-types"
import { SketchPicker } from 'react-color'
class ColorpickerNavbar extends React.Component {
constructor(props) {
super(props);
this.state = { selector: props.selector };
this.handleChange = this.handleChange.bind(this);
}
handleChange = (navbar_color) => {
let myNav = document.getElementById("my_nav")
myNav.style.background = navbar_color.hex;
let elem = document.querySelector('#' + this.state.selector);
elem.value = navbar_color.hex;
}
render(){
return (
<React.Fragment>
<SketchPicker navbar_color={this.props.navbar_color}
onChange={this.handleChange}/>
</React.Fragment>
);
}
}
ColorpickerNavbar.propTypes = {};
export default ColorpickerNavbar
答案 0 :(得分:1)
使用方法setAttribute:
toROSMsg(cloudrgb, image);