'Why is Vue.js Chrome Devtools not detecting Vue.js?

I have the following code with a simple working Vue.js application. But the vue.js devtools is not responding. It was working well a few days ago, now it's not working anymore what could possibly be going wrong? when I go to https://chrome.google.com/webstore/detail/vuejs-devtools/nhdogjmejiglipccpnnnanhbledajbpd, it says it is already added.

<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">

  <script src="https://unpkg.com/[email protected]/dist/vue.js"></script>

  <title>Document</title>
</head>
<body>
<div class="container">
  <div id="application">
    <input type="text" v-model="message">
    <p>The value of the input is: {{ message }}</p>
  </div>
</div>

<script>
  let data = {
    message: 'Hello World'
  }

  new Vue({
    el: '#application',
    data: data
  })
</script>
</body>
</html>
vue.jsdevtools


Solution 1:[1]

One alternative is to set up a local web server, as the OP already stated.
The other - which IMHO is faster and less harassing - is letting the extension have access to file URLs, which is disabled by default.

Simply go to chrome://extensions and leave the "Allow access to file URLs" box checked for Vue.js devtools.

Sources:
https://github.com/vuejs/vue-devtools#common-problems-and-how-to-fix
http://codersdeck.com/vue-js-2-setting-vue-devtools/

Solution 2:[2]

I tried all of the ways presented in answers here, but none of them worked for me (neither for chrome nor for firefox).

Finally I found an answer: If you still have this problem, you can try to uninstall the current version of Vue extension and install beta version: https://v3.vuejs.org/guide/migration/introduction.html#devtools-extension

Remember to restart your browser afterwards.

Solution 3:[3]

UPDATE: 2021 May 30,

If you are using Vue 3, old dev tools versions won't work, so just use the new beta version.

https://chrome.google.com/webstore/detail/vuejs-devtools/ljjemllljcmogpfapbkkighbhhppjdbg

Solution 4:[4]

To solve this, simply go to chrome://extensions/, scroll down to the Vue.js devtools and enable the "Allow Access to file URLs" by clicking on its checkbox.

Source: https://github.com/vuejs/vue-devtools/issues/236

Solution 5:[5]

Had the same issue and solved it by adding

Vue.config.devtools = true;

after Vue.js import script, then take look at chrome devtools. You will see a tab called Vue to inspect your vue instance.

reference: https://vuejs.org/v2/api/#devtools

Solution 6:[6]

I found out the answer, I was viewing a plain html file on my computer which was making the vue.js tool not load. I loaded up my local xampp server and ran the application from the local machine server url again and now vue.js devtools is working! :)

Solution 7:[7]

Also you can disable with Vue config: https://vuejs.org/v2/api/#devtools

Solution 8:[8]

in the extensions folder in chrome browser, under the details tab in vue devtools extension, check the box having allow access to file URLs, this worked for me..

Solution 9:[9]

If you're using Vue 3 and experiencing this issue, try installing the beta version of the Vue Devtools. It may help until the stable version gets the major refactor.

Solution 10:[10]

I had the same issue & solved it by:

  1. Installing this extension Vue Dev Tools Beta Chrome Extention
  2. Reloading the chrome browser.

Solution 11:[11]

i had this problem, and i was expecting the vue-devtools to work by just including it. i had it console log the version

console.log("Vue Version " +Vue.version );

but this didnt work to actually load an instance of vue.

took me a few minutes, but once i actually created a vue instance, then it worked. this was the hello world example that made the devtools work :)

let data = {
  message: 'Hello World'
}

new Vue({
  el: '#application',
  data: data
})

Solution 12:[12]

I solved the same problem. But in my case Vue.js Chrome Devtools didn't detect Vue.js because in html file was <script src="https://unpkg.com/vue"/>

I replaced it to <script src="https://unpkg.com/vue"></script> Now Chrome Devtools is detecting Vue.js perfectly.

Thanks for exapmle above.I use [email protected] and open my html by file://

Solution 13:[13]

In the case of Firefox, install the beta version of vue-devtools, which supports Vue 3.

Solution 14:[14]

If you have already turned on Allow Access to file URLs in chrome://extensions/ -> Vue Devtools and it still does not work, try reinstall the Vue Devtools, might work for you.

Solution 15:[15]

I'm using Vue in electron and I have the electron main "app" separated Vue's "app".

When in the the debugger console, typing Vue was giving the error Uncaught ReferenceError: Vue is not defined

Here was my fix

window.vue = new Vue({
  components: {
    App,
    Login,
  },
  router,
  store,
  template: '<App/>',
}).$mount('#app');

The work-around was assigning window.Vue so the devtool could find it.

Solution 16:[16]

The same problem here, and I've solved it.

If you are developing in the localhost environment and using Chrome Dev Tools then you need to give permission for the Vue.js extension to access the local files on your computer.

  • Config your Vue.js tool in Chrome extensions
  • Search for "Vue.js devtools"
  • Click on details
  • Check the "Allow access to file URLs" checkbox

Solution 17:[17]

check if vuejs app is not embedded in an iframe such as in a storybook app.

the hack in such a case is to work outside the parent frame working directly on the url of your iframe and the vue enter image description heredevtools should work fine.

Solution 18:[18]

In my case I just had compiled for production npm run prod - which was the issue. As I ran in dev npm run dev, it started recognizing Vue.

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