我必须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,我不想在开头本身就加载这些文件。

只有在用户打开特定组件(使用路由器视图)时才需要支付网关。

有办法实现这个目标吗?

谢谢。


当前回答

我发现一个快速简单的方法是这样的:

<template>
    <div>Some HTML</div>
    <component
        src="https://unpkg.com/flowbite@1.5.3/dist/flowbite.js"
        :is="'script'"
    ></component>
</template>

其他回答

为了保持组件的干净,你可以使用mixin。

在组件上导入外部mixin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(我包括这个,如果任何导入卡住)

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

如果你正在使用Vue 3和Composition API(我强烈推荐),并且你经常使用<script>标记,你可以为它写一个“composable”函数:

import { onMounted } from "vue";

export const useScript = (src, async = false, defer = false) => {
  onMounted(() => {
    // check if script already exists
    if (document.querySelector(`head script[src="${src}"`)) return;

    // add tag to head
    const tag = document.createElement("script");
    tag.setAttribute("src", src);
    if (async) tag.setAttribute("async", "");
    if (defer) tag.setAttribute("defer", "");
    tag.setAttribute("type", "text/javascript");
    document.head.append(tag);
  });
};

或者,如果你正在使用VueUse(我也强烈推荐),你可以使用他们现有的useScriptTag函数。

最简单的解决方案是将脚本添加到vue-project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>

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);
    });
  }

来自mejiamanuel57的答案很好,但我想添加几个适合我的技巧(我花了几个小时在上面)。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”实例创建一个新变量。

<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上使用它。这里有一个关于“let self = this;”在Javascript中如何工作的技巧的解释:

var that = this;在JavaScript中是什么意思?