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【已解决】ReactJS中如何把AdminLTE中左边导航栏缩起来

AdminLTE crifan 691浏览 0评论

折腾:

【已解决】ReactJS中点击按钮无法显示下拉弹框

后,也去把左边的导航栏无法缩起来的问题:

也尝试用同样办法去看看能否解决掉:

之前代码是:

    pushMenu() {
        console.log(‘HeaderBar pushMenu’);
        console.log(document);
        console.log(document.body);
        console.log(document.body.clientWidth);
        var body = document.body;
        if(body.clientWidth > 768){
            if(body.className.indexOf(‘sidebar-collapse’) === -1){
                console.log(body.className);
                body.className += ‘ sidebar-collapse’;
                console.log(body.className);
            }else {
                console.log(body.className);
                body.className = body.className.replace(‘ sidebar-collapse’, ”);
                console.log(body.className);
            }
        }else{
            if (body.className.indexOf(‘sidebar-open’) === -1) {
                console.log(body.className);
                body.className += ‘ sidebar-open’;
                console.log(body.className);
            }else{
                console.log(body.className);
                body.className = body.className.replace(‘ sidebar-open’,”);
                console.log(body.className);
            }
        }
    }
                <nav className=”navbar navbar-static-top” role=”navigation”>
                    {/* Sidebar toggle button*/}
                    <a
                        href=”#”
                        className=”sidebar-toggle”
                        data-toggle=”offcanvas”
                        role=”button”
                        onClick={this.pushMenu}
                    >
                        <span className=”sr-only”>导航栏开关</span>
                    </a>

以为是sidebar-collapse的css加到此处即可。

所以想要去改为:

className=”sidebar-toggle sidebar-collapse”

发现好像不起效果,所以去参考官网:

https://adminlte.io/themes/AdminLTE/pages/tables/data.html

还真的是,对于body中去添加的sidebar-collapse

但是此处的body的css是html的模板index.template.ejs中写死的:

  <body class=”skin-blue sidebar-mini wysihtml5-supported”>

所以此处就不方便去操作body中的css的class啊。

react js operate body

javascript – Trying to use React.DOM to set body styles – Stack Overflow

好像是:如果不是react的范围内控制的代码,则是可以直接操作的?

调试期间,遇到很多诡异的事情,先是对于state,设置之前和之后,都还是false,或都还是true

后来又遇到:

【已解决】ReactJS中无法调用自己的本地函数Uncaught TypeError: Cannot read property of null

react js dom manipulation

reactjs – React: How much can I manipulate the DOM React has rendered? – Stack Overflow

What is the best place to do DOM manipulations in ReactJS? – Hashnode

去试试

this.forceUpdate();

结果无效果。

DOM manipulation in React?:reactjs

What is the best place to do DOM manipulations in ReactJS? – Hashnode

Direct Manipulation

reactjs dangerouslysetinnerhtml

Dangerously Set innerHTML | React

javascript – React.js: Set innerHTML vs dangerouslySetInnerHTML – Stack Overflow

DOM Elements – React

dangerouslySetInnerHTML就是用来替代innerHTML的

javascript – Rendering raw html with reactjs – Stack Overflow

javascript – Reactjs convert to html – Stack Overflow

React 冷技巧 : dangerouslySetInnerHTML | Duncan ‘s Blog

此处,即使用了dangerouslySetInnerHTML之类的东西,也还是无法操作,当前Component之外的,最外层的Body中的class

react js operate body class

Update Body Class in React | Jake Trent

javascript – When, where and how to add class to the document.body when using React.js – Stack Overflow

CSS class .ReactModal__Body–open isn’t added to body · Issue #99 · reactjs/react-modal

How to Render Components Outside the Main ReactJS App

打算去看看:

shouldComponentUpdate

但是:

什么时候要在React组件中写shouldComponentUpdate?

还是尽量不要用了。

而且这样写:

    shouldComponentUpdate(){
        retrun false;
    }

也是不对的。

抽空再继续弄。

看了:

react-body-classname/index.js at master · iest/react-body-classname

源码中,也是直接操作:

  document.body.className = stringClassNames || ”;

gaearon/react-side-effect: Create components whose nested prop changes map to a global side effect

react js get dom node

Refs and the DOM – React

ReactDOM – React

好像可以用

ReactDOM.findDOMNode(component)

reactjs – Getting DOM node from React child element – Stack Overflow

Interacting with the DOM in React.js, By Example

6.8 Accessing Children Components/Nodes · React Enlightenment

When to use React’s Ref on a DOM node in React – RWieruch

ReactDOM.findDOMNode

React 相关方法(API)介绍-ReactDom、ReactDOMServer、子节点 – IT笔录

How to focus DOM Node after using ReactDOM.findDOMNode? · Issue #3465 · facebook/flow

ReactDOM – React

reactjs update body class style

Update Body Class in React | Jake Trent

算了,还是去试试:

iest/react-body-classname: Declarative, nested, stateful, isomorphic body.className for React

➜  react-hot-boilerplate git:(master) ✗ npm install react-body-classname
npm WARN babel-loader@6.2.10 requires a peer of webpack@1 || 2 || ^2.1.0-beta || ^2.2.0-rc but none was installed.
npm WARN react-dom@15.6.1 requires a peer of react@^15.6.1 but none was installed.
added 4 packages in 10.636s

然后用代码:

    toggleSideNaviBar(){
        console.log(`toggleSideNaviBar: before this.state.isNaviBarCollapse=${this.state.isNaviBarCollapse}`);
        let isCollapse = !this.state.isNaviBarCollapse;
        this.setState({isNaviBarCollapse : isCollapse});
        console.log(`toggleSideNaviBar: -> this.state.isNaviBarCollapse=${this.state.isNaviBarCollapse}`);
    }
    render() {
        return (
            <BodyClassName className={
                this.state.isNaviBarCollapse ?
                    ‘skin-blue sidebar-mini wysihtml5-supported sidebar-collapse’ :
                    ‘skin-blue sidebar-mini wysihtml5-supported’
            }>
    
            <header className=”main-header”>
。。。
                    <a
                        href=”#”
                        className=”sidebar-toggle”
                        data-toggle=”offcanvas”
                        role=”button”
                        onClick={this.toggleSideNaviBar}
                    >
                        <span className=”sr-only”>导航栏开关</span>
                    </a>
。。。
            </header>
            </BodyClassName>
        );

就可以实现对应的效果了。

点击toggle navi bar的按钮,就可以 缩起来 或者 展开对应的左边的导航栏了。

然后再去优化代码:

【总结】

最终用代码:

export default class HeaderBar extends Component {
    // ES7+: Initial state
    state = {
        isUserDropdown: false,
        isNaviBarCollapse: false
    };
    constructor(props) {
        super(props);
        console.log(`HeaderBar constructor: this.state.isNaviBarCollapse=${this.state.isNaviBarCollapse},this.state.isUserDropdown=${this.state.isUserDropdown}`)
        this.toogleUserDropdown = this.toogleUserDropdown.bind(this);
        this.toggleSideNaviBar  = this.toggleSideNaviBar.bind(this);
    }
    toggleSideNaviBar(){
        console.log(`toggleSideNaviBar: before this.state.isNaviBarCollapse=${this.state.isNaviBarCollapse}`);
        let isCollapse = !this.state.isNaviBarCollapse;
        this.setState({isNaviBarCollapse : isCollapse});
        console.log(`toggleSideNaviBar: -> this.state.isNaviBarCollapse=${this.state.isNaviBarCollapse}`);
    }
    generateCurBodyClass(isCollapse) {
        let curBodyClass = document.body.className;
        console.log(`generateCurBodyClass: curBodyClass=${curBodyClass}`);
        let collapseName = ”;
        if (document.body.clientWidth > 768){
            collapseName = ‘sidebar-collapse’;
        } else {
             collapseName = ‘sidebar-open’;
        }
        let spaceCollapseName = ‘ ‘ + collapseName;
        console.log(`collapseName=${collapseName},spaceCollapseName=${spaceCollapseName}`);
        //remove previous if existed
        if (curBodyClass.includes(spaceCollapseName)){
            curBodyClass = curBodyClass.replace(spaceCollapseName, ”);
            console.log(`removed previous: curBodyClass=${curBodyClass}`);
        }
        if (isCollapse) {
            curBodyClass += spaceCollapseName;
            console.log(`added: curBodyClass=${curBodyClass}`);
        }
        console.log(`isCollapse=${isCollapse} -> curBodyClass=${curBodyClass}`);
        return curBodyClass;
    }
    render() {
        console.log(`HeaderBar render`);
        return (
            <BodyClassName className={this.generateCurBodyClass(this.state.isNaviBarCollapse)}>
            
            <header className=”main-header”>
                    <a
                        href=”#”
                        className=”sidebar-toggle”
                        data-toggle=”offcanvas”
                        role=”button”
                        onClick={this.toggleSideNaviBar}
                    >
                        <span className=”sr-only”>导航栏开关</span>
                    </a>
                        </ul>
                    </div>
                </nav>
            </header>
            </BodyClassName>
        );
    }

效果是:

当宽度小于768时:

转载请注明:在路上 » 【已解决】ReactJS中如何把AdminLTE中左边导航栏缩起来

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