Question

我要为支付网关使用两个外部脚本。现在两者都放在'index.html'文件中。但是，我不想在开头加载这些文件。仅当用户打开特定组件（使用路由器视图）时才需要支付网关。反正有没有实现这个目标？

Answer 1

解决此问题的一种简单有效的方法是将外部脚本添加到组件的vue mounted()中。我将使用Google Recaptcha脚本说明您：

<template>
  .... your HTML
</template>

<script>
export default {
  data: () => ({
    ......data of your component
  }),
  mounted() {
    let recaptchaScript = document.createElement('script')
    recaptchaScript.setAttribute('src', 'https://www.google.com/recaptcha/api.js')
    document.head.appendChild(recaptchaScript)
  },
  methods: {
    ......methods of your component
  }
}
</script>

来源：https://medium.com/@lassiuosukainen/how-to-include-a-script-tag-on-a-vue-component-fe10940af9e8

Answer 2

如果您尝试将外部js脚本嵌入到vue.js组件模板中，请执行以下操作：

我想向我的组件添加外部javascript嵌入代码：

<template>
  <div>
    This is my component
    <script src="https://badge.dimensions.ai/badge.js"></script>
  </div>
<template>

Vue向我显示了此错误：

模板仅应负责将状态映射到UI。避免在模板中放置带有副作用的标签，例如，因为它们不会被解析。

我解决该问题的方法是添加type="application/javascript" （See this question to learn more about MIME type for js）：

<script type="application/javascript" defer src="..."></script>

您可能会注意到defer属性。如果您想了解更多信息，请观看this video by Kyle

Answer 3

使用webpack和vue loader你可以做这样的事情

它在创建组件之前等待外部脚本加载，因此组件中可以使用globar vars等

components: {
 SomeComponent: () => {
  return new Promise((resolve, reject) => {
   let script = document.createElement(‘script’)
   script.onload = () => {
    resolve(import(someComponent’))
   }
   script.async = true
   script.src = ‘https://maps.googleapis.com/maps/api/js?key=APIKEY&libraries=places’
   document.head.appendChild(script)
  })
 }
},

Answer 4

我下载了一些自定义js文件和jquery附带的HTML模板。我不得不将那些js附加到我的应用程序中。并继续使用Vue。

找到了这个插件，这是通过CDN和静态文件添加外部脚本的一种干净方法 https://www.npmjs.com/package/vue-plugin-load-script

// local files
// you have to put your scripts into the public folder. 
// that way webpack simply copy these files as it is.
Vue.loadScript("/js/jquery-2.2.4.min.js")

// cdn
Vue.loadScript("https://maps.googleapis.com/maps/api/js")

Answer 5

这可以像这样简单地完成。

  created() {
    var scripts = [
      "https://cloudfront.net/js/jquery-3.4.1.min.js",
      "js/local.js"
    ];
    scripts.forEach(script => {
      let tag = document.createElement("script");
      tag.setAttribute("src", script);
      document.head.appendChild(tag);
    });
  }

Answer 6

您是否正在使用其中一个Webpack启动器模板进行vue（https://github.com/vuejs-templates/webpack）？它已经设置了vue-loader（https://github.com/vuejs/vue-loader）。如果您没有使用入门模板，则必须设置webpack和vue-loader。

然后，您可以将脚本import发送到相关（单个文件）组件。在此之前，您必须从脚本export import到您的组件override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { var cell : UITableViewCell! if indexPath.section == 0 { cell = tableView.dequeueReusableCell(withIdentifier: "id of cell contain colletoinview for recent search", for: indexPath) } else { cell = tableView.dequeueReusableCell(withIdentifier: "id of cell for trending", for: indexPath) } return cell! }。

ES6导入：
- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import
- http://exploringjs.com/es6/ch_modules.html

〜编辑〜
您可以从这些包装中导入：
- https://github.com/matfish2/vue-stripe
- https://github.com/khoanguyen96/vue-paypal-checkout

Answer 7

您可以使用基于承诺的解决方案加载所需的脚本：

export default {
  data () {
    return { is_script_loading: false }
  },
  created () {
    // If another component is already loading the script
    this.$root.$on('loading_script', e => { this.is_script_loading = true })
  },
  methods: {
    load_script () {
      let self = this
      return new Promise((resolve, reject) => {

        // if script is already loading via another component
        if ( self.is_script_loading ){
          // Resolve when the other component has loaded the script
          this.$root.$on('script_loaded', resolve)
          return
        }

        let script = document.createElement('script')
        script.setAttribute('src', 'https://www.google.com/recaptcha/api.js')
        script.async = true

        this.$root.$emit('loading_script')

        script.onload = () => {
          /* emit to global event bus to inform other components
           * we are already loading the script */
          this.$root.$emit('script_loaded')
          resolve()
        }

        document.head.appendChild(script)

      })

    },

    async use_script () {
      try {
        await this.load_script()
        // .. do what you want after script has loaded
      } catch (err) { console.log(err) }

    }
  }
}

请注意this.$root有点hacky，您应该使用vuex或eventHub解决方案代替全球活动。

您可以将上述内容添加到组件中并在需要的地方使用它，它只会在使用时加载脚本。

Answer 8

mejiamanuel57 的回答很棒，但我想添加一些适用于我的案例的技巧（我花了几个小时研究它们）。首先，我需要使用“窗口”范围。此外，如果您需要访问“onload”函数内的任何 Vue 元素，则需要为“this”实例添加一个新变量。

<script>
import { mapActions } from "vuex";
export default {
  name: "Payment",
  methods: {
    ...mapActions(["aVueAction"])
  },
  created() {
    let paywayScript = document.createElement("script");
    let self = this;
    paywayScript.onload = () => {
      // call to Vuex action.
      self.aVueAction();
      // call to script function
      window.payway.aScriptFunction();
    };
    // paywayScript.async = true;
    paywayScript.setAttribute(
      "src",
      "https://api.payway.com.au/rest/v1/payway.js"
    );
    document.body.appendChild(paywayScript);
  }
};
</script>

我在 Vue 2.6 上使用过这个。这里有一个关于“让自我=这个;”技巧的解释。在 Javascript 中工作：

What does 'var that = this;' mean in JavaScript?

Answer 9

您可以使用vue-head包向vue组件的开头添加脚本和其他标签。

它很简单：

var myComponent = Vue.extend({
  data: function () {
    return {
      ...
    }
  },
  head: {
    title: {
      inner: 'It will be a pleasure'
    },
    // Meta tags
    meta: [
      { name: 'application-name', content: 'Name of my application' },
      { name: 'description', content: 'A description of the page', id: 'desc' }, // id to replace intead of create element
      // ...
      // Twitter
      { name: 'twitter:title', content: 'Content Title' },
      // with shorthand
      { n: 'twitter:description', c: 'Content description less than 200 characters'},
      // ...
      // Google+ / Schema.org
      { itemprop: 'name', content: 'Content Title' },
      { itemprop: 'description', content: 'Content Title' },
      // ...
      // Facebook / Open Graph
      { property: 'fb:app_id', content: '123456789' },
      { property: 'og:title', content: 'Content Title' },
      // with shorthand
      { p: 'og:image', c: 'https://example.com/image.jpg' },
      // ...
    ],
    // link tags
    link: [
      { rel: 'canonical', href: 'http://example.com/#!/contact/', id: 'canonical' },
      { rel: 'author', href: 'author', undo: false }, // undo property - not to remove the element
      { rel: 'icon', href: require('./path/to/icon-16.png'), sizes: '16x16', type: 'image/png' }, 
      // with shorthand
      { r: 'icon', h: 'path/to/icon-32.png', sz: '32x32', t: 'image/png' },
      // ...
    ],
    script: [
      { type: 'text/javascript', src: 'cdn/to/script.js', async: true, body: true}, // Insert in body
      // with shorthand
      { t: 'application/ld+json', i: '{ "@context": "http://schema.org" }' },
      // ...
    ],
    style: [
      { type: 'text/css', inner: 'body { background-color: #000; color: #fff}', undo: false },
      // ...
    ]
  }
})

查看此link以获得更多示例。

Answer 10

mounted() {
    if (document.getElementById('myScript')) { return }
    let src = 'your script source'
    let script = document.createElement('script')
    script.setAttribute('src', src)
    script.setAttribute('type', 'text/javascript')
    script.setAttribute('id', 'myScript')
    document.head.appendChild(script)
}


beforeDestroy() {
    let el = document.getElementById('myScript')
    if (el) { el.remove() }
}

Answer 11

您可以使用vue-loader并在自己的文件中编写组件（单个文件组件）。这将允许您在组件的基础上包含脚本和CSS。

Answer 12

在mount中创建标记的最佳答案是好的，但是存在一些问题：

如果您多次更改链接，它将一遍又一遍地重复创建标签。

因此，我创建了一个脚本来解决此问题，并且可以根据需要删除标签。

这很简单，但是可以节省您自己创建它的时间。

// PROJECT/src/assets/external.js

function head_script(src) {
    if(document.querySelector("script[src='" + src + "']")){ return; }
    let script = document.createElement('script');
    script.setAttribute('src', src);
    script.setAttribute('type', 'text/javascript');
    document.head.appendChild(script)
}

function body_script(src) {
    if(document.querySelector("script[src='" + src + "']")){ return; }
    let script = document.createElement('script');
    script.setAttribute('src', src);
    script.setAttribute('type', 'text/javascript');
    document.body.appendChild(script)
}

function del_script(src) {
    let el = document.querySelector("script[src='" + src + "']");
    if(el){ el.remove(); }
}


function head_link(href) {
    if(document.querySelector("link[href='" + href + "']")){ return; }
    let link = document.createElement('link');
    link.setAttribute('href', href);
    link.setAttribute('rel', "stylesheet");
    link.setAttribute('type', "text/css");
    document.head.appendChild(link)
}

function body_link(href) {
    if(document.querySelector("link[href='" + href + "']")){ return; }
    let link = document.createElement('link');
    link.setAttribute('href', href);
    link.setAttribute('rel', "stylesheet");
    link.setAttribute('type', "text/css");
    document.body.appendChild(link)
}

function del_link(href) {
    let el = document.querySelector("link[href='" + href + "']");
    if(el){ el.remove(); }
}

export {
    head_script,
    body_script,
    del_script,
    head_link,
    body_link,
    del_link,
}

您可以像这样使用它：

// PROJECT/src/views/xxxxxxxxx.vue

......

<script>
    import * as external from '@/assets/external.js'
    export default {
        name: "xxxxxxxxx",
        mounted(){
            external.head_script('/assets/script1.js');
            external.body_script('/assets/script2.js');
            external.head_link('/assets/style1.css');
            external.body_link('/assets/style2.css');
        },
        destroyed(){
            external.del_script('/assets/script1.js');
            external.del_script('/assets/script2.js');
            external.del_link('/assets/style1.css');
            external.del_link('/assets/style2.css');
        },
    }
</script>

......

Answer 13

要保持组件清洁，可以使用mixins。

在您的组件上导入外部混合文件。

Profile.vue

import externalJs from '@client/mixins/externalJs';

export default{
  mounted(){
    this.externalJsFiles();
  }
}

externalJs.js

import('@JSassets/js/file-upload.js').then(mod => {
  // your JS elements 
})

babelrc（如果导入时卡住，我会包括在内）

{
  "presets":["@babel/preset-env"],
  "plugins":[
    [
     "module-resolver", {
       "root": ["./"],
       alias : {
         "@client": "./client",
         "@JSassets": "./server/public",
       }
     }
    ]
}

Answer 14

最简单的解决方案是将脚本添加到您的vue项目的index.html文件中

index.html：

 <!DOCTYPE html>
    <html lang="en">
      <head>
        <meta charset="utf-8">
        <title>vue-webpack</title>
      </head>
      <body>
        <div id="app"></div>
        <!-- start Mixpanel --><script type="text/javascript">(function(c,a){if(!a.__SV){var b=window;try{var d,m,j,k=b.location,f=k.hash;d=function(a,b){return(m=a.match(RegExp(b+"=([^&]*)")))?m[1]:null};f&&d(f,"state")&&(j=JSON.parse(decodeURIComponent(d(f,"state"))),"mpeditor"===j.action&&(b.sessionStorage.setItem("_mpcehash",f),history.replaceState(j.desiredHash||"",c.title,k.pathname+k.search)))}catch(n){}var l,h;window.mixpanel=a;a._i=[];a.init=function(b,d,g){function c(b,i){var a=i.split(".");2==a.length&&(b=b[a[0]],i=a[1]);b[i]=function(){b.push([i].concat(Array.prototype.slice.call(arguments,
    0)))}}var e=a;"undefined"!==typeof g?e=a[g]=[]:g="mixpanel";e.people=e.people||[];e.toString=function(b){var a="mixpanel";"mixpanel"!==g&&(a+="."+g);b||(a+=" (stub)");return a};e.people.toString=function(){return e.toString(1)+".people (stub)"};l="disable time_event track track_pageview track_links track_forms track_with_groups add_group set_group remove_group register register_once alias unregister identify name_tag set_config reset opt_in_tracking opt_out_tracking has_opted_in_tracking has_opted_out_tracking clear_opt_in_out_tracking people.set people.set_once people.unset people.increment people.append people.union people.track_charge people.clear_charges people.delete_user people.remove".split(" ");
    for(h=0;h<l.length;h++)c(e,l[h]);var f="set set_once union unset remove delete".split(" ");e.get_group=function(){function a(c){b[c]=function(){call2_args=arguments;call2=[c].concat(Array.prototype.slice.call(call2_args,0));e.push([d,call2])}}for(var b={},d=["get_group"].concat(Array.prototype.slice.call(arguments,0)),c=0;c<f.length;c++)a(f[c]);return b};a._i.push([b,d,g])};a.__SV=1.2;b=c.createElement("script");b.type="text/javascript";b.async=!0;b.src="undefined"!==typeof MIXPANEL_CUSTOM_LIB_URL?
    MIXPANEL_CUSTOM_LIB_URL:"file:"===c.location.protocol&&"//cdn.mxpnl.com/libs/mixpanel-2-latest.min.js".match(/^\/\//)?"https://cdn.mxpnl.com/libs/mixpanel-2-latest.min.js":"//cdn.mxpnl.com/libs/mixpanel-2-latest.min.js";d=c.getElementsByTagName("script")[0];d.parentNode.insertBefore(b,d)}})(document,window.mixpanel||[]);
    mixpanel.init("xyz");</script><!-- end Mixpanel -->
        <script src="/dist/build.js"></script>
      </body>
    </html>

Answer 15

此用例有一个vue组件

https://github.com/TheDynomike/vue-script-component#usage

<template>
    <div>
        <VueScriptComponent script='<script type="text/javascript"> alert("Peekaboo!"); </script>'/>
    <div>
</template>

<script>
import VueScriptComponent from 'vue-script-component'

export default {
  ...
  components: {
    ...
    VueScriptComponent
  }
  ...
}
</script>

Answer 16

好吧，这是我在 qiokian（一个 live2d 动漫人物 vuejs 组件）中的实践：

（以下来自文件 src/qiokian.vue）

<script>
export default {
    data() {
        return {
            live2d_path:
                'https://cdn.jsdelivr.net/gh/knowscount/live2d-widget@latest/',
            cdnPath: 'https://cdn.jsdelivr.net/gh/fghrsh/live2d_api/',
        }
    },
<!-- ... -->
        loadAssets() {
            // load waifu.css live2d.min.js waifu-tips.js
            if (screen.width >= 768) {
                Promise.all([
                    this.loadExternalResource(
                        this.live2d_path + 'waifu.css',
                        'css'
                    ),
<!-- ... -->
        loadExternalResource(url, type) {
            // note: live2d_path parameter should be an absolute path
            // const live2d_path =
            //   "https://cdn.jsdelivr.net/gh/knowscount/live2d-widget@latest/";
            //const live2d_path = "/live2d-widget/";
            return new Promise((resolve, reject) => {
                let tag

                if (type === 'css') {
                    tag = document.createElement('link')
                    tag.rel = 'stylesheet'
                    tag.href = url
                } else if (type === 'js') {
                    tag = document.createElement('script')
                    tag.src = url
                }
                if (tag) {
                    tag.onload = () => resolve(url)
                    tag.onerror = () => reject(url)
                    document.head.appendChild(tag)
                }
            })
        },
    },
}

如何将外部JS脚本添加到VueJS组件

16 个答案: