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vue开发须知

vue开发须知

作者: zlf_j | 来源:发表于2021-01-27 10:25 被阅读0次

lang="less"报错,原因是less-loader版本过高

解决办法:将less-loader的版本降低
1、在package.js中找到less-loader,将版本号改为 ^5.0.0;
2、然后再执行npm install less-loader@5.0.0 --save。
https://blog.csdn.net/l244112311/article/details/105844036

axios.defaults.withCredentials = true;

  • 默认情况下,跨源请求不提供凭据(cookie、HTTP认证及客户端SSL证明等)。通过将withCredentials属性设置为true,可以指定某个请求应该发送凭据。
  • 后端需要带cookie过去,而前端没有设置为true,所以导致cookie传不过去
  • 当配置了 withCredentials = true时,必须在后端增加 response 头信息Access-Control-Allow-Origin,且必须指定域名,而不能指定为*!!!
    https://www.cnblogs.com/hehuiqiong/p/13132226.html
  • vue不会自动保存后端传来的cookie
    https://blog.csdn.net/qq_39611230/article/details/108090828

Vuex namespaced: true配置

Uncaught TypeError: routes.forEach is not a function

vue创建项目报错

Command vue init requires a global addon to be installed.   
Please run yarn global add @vue/cli-init
image.png
  • 解决办法:先执行以下命令
npm install -g @vue/cli-init 

https://blog.csdn.net/weixin_42886893/article/details/107022876

less报错

* !!vue-style-loader!css-loader?{"sourceMap":true}
!../../node_modules/vue-loader/lib/style-compiler/index? .......
image.png

vue项目打包后,dist里有文件报错404

  • 修改config/index.js
assetsPublicPath: './'   // 将'/'改成'./'

https://blog.csdn.net/miss_liangrm/article/details/98534134

  • 如果router里设置了base值,则设置为该目录
const router = new Router({
    base: 'treat',
    mode: 'history'
});
assetsPublicPath: '/treat/' // ***

Vue+elementUI build打包后字体图标丢失问题

解决办法:
build目录下utils.js,添加 publicPath: '../../'

if (options.extract) {
    return ExtractTextPlugin.extract({
        use: loaders,
        fallback: 'vue-style-loader',
        publicPath: '../../' // 修改
    })
} else {
    return ['vue-style-loader'].concat(loaders)
}

https://blog.csdn.net/qq_38543537/article/details/90755830

vue配置dev、test、pro环境,实现分环境打包

https://www.pianshen.com/article/57691807884/

webpack 在index.html里面区分环境变量(process.env.NODE_ENV)

<script>
    if ('<%= process.env.NODE_ENV %>' === 'development') {
      window.SITE_CONFIG['apiURL'] = '/api';     //  prod_api                        // api请求地址
    } else {
      window.SITE_CONFIG['apiURL'] = '/prod_api';     //          
    }
</script>

https://blog.csdn.net/xiaomogg/article/details/102549753

网页title的logo小图标

  • 图片需要放在static里引入,本地才会展示
<link rel="shortcut icon" type="image/x-icon" href="./static/img/logo.png" />

PC端网页基本设置

<title>标题</title>
<meta name="description" content='内容长一点' />
<meta name="keywords" content='内容短一点' />
<link rel="shortcut icon" type="image/x-icon" href="./static/img/logo.png"/>

移动端网页适配

    <meta id="viewport" content="width=device-width, user-scalable=yes,initial-scale=1" name="viewport" />
   <script>
        var detectBrowser = function(name) {
            if (navigator.userAgent.toLowerCase().indexOf(name) > -1) {
                return true;
            } else {
                return false;
            }
        };
        var width = parseInt(window.screen.width);
        var scale = width / 640; // 根据设计稿尺寸进行相应修改:640=>?
        var userScalable = 'no';
        if (detectBrowser("qq/")) userScalable = 'yes';
        document.getElementById('viewport').setAttribute(
            'content', 'target-densitydpi=device-dpi,width=1445,user-scalable=' + userScalable + ',initial-scale=' + scale); // 这里也别忘了改:640=>?
    </script>

https://www.jb51.net/article/110711.htm

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