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Is there any way to switch JSON files for the same script?

I'm trying to implement dark mode on my web where I have the particlesj script and I need to modify the color of the particles for the light mode. Is there any way to switch between JSON files? Let's say particles.json and particles-light.json. Appreciate any help so much.

I've made a sample using themes with tsParticles here: https://codepen.io/matteobruni/pen/vYejMNr
You can have a single config with configured themes like in the sample above.
I'll show below more in details how to achieve it.
// the particles container, used for calling the loadTheme method
let themeableContainer;
document.getElementById("btnLight").addEventListener("click", () => {
if (themeableContainer) {
// the theme name must be used when loading theme
themeableContainer.loadTheme("light");
}
});
document.getElementById("btnDark").addEventListener("click", () => {
if (themeableContainer) {
// the theme name must be used when loading theme
themeableContainer.loadTheme("dark");
}
});
tsParticles.loadJSON("tsparticles", "particles.json").then((container) => {
// assigning the loaded container
themeableContainer = container;
});
and the config looks like this
{
"fpsLimit":60,
"particles":{
"move":{
"bounce":false,
"direction":"none",
"enable":true,
"outModes":"out",
"random":false,
"speed":2,
"straight":false
},
"number":{
"density":{
"enable":true,
"area":800
},
"value":80
},
"opacity":{
"value":0.5
},
"shape":{
"type":"circle"
},
"size":{
"value":{
"min":1,
"max":5
}
}
},
"themes":[
{
"name":"light",
"default":{
"value":true,
"mode":"light"
},
"options":{
"background":{
"color":"#fff"
},
"particles":{
"color":{
"value":"#000"
}
}
}
},
{
"name":"dark",
"default":{
"value":true,
"mode":"dark"
},
"options":{
"background":{
"color":"#000"
},
"particles":{
"color":{
"value":"#fff"
}
}
}
}
]
}
The theme object accept those values, the options inside are a whole options so you can override everything from the background to the particles options.

In the GitHub reop you can find the following example:
particlesJS.load('particles-js', 'assets/particles.json', function() {
console.log('callback - particles.js config loaded');
});
I guess that you can probably call this load() function with a new JSON file when needed.

Alright so I've been trying and finally came to a solution. What I've done is to create a function associated to the theme selector checkbox.
particlesJS.load('particles-js', 'assets/particles.json');
function ThemeSwitch() {
if (document.getElementById('checkbox').value === 'dark') {
particlesJS.load('particles-js', 'assets/particles-light.json');
document.getElementById('checkbox').value = 'light';
} else {
particlesJS.load('particles-js', 'assets/particles.json');
document.getElementById('checkbox').value = 'dark';
}
}
And this is the input.
<input type="checkbox" id="checkbox" name="check" value="dark" onclick="ThemeSwitch()"/>
Good or bad (have no JS idea pretty much), it is working.

Can I set the font width of a font in Phaser 3?

I am using Phaser 3 to develop a browser game in a canvas with WebGL. I set the width of the canvas text from a custom loaded font, but I cannot set it's style (e.g., italic, semibold).
Here is the code that I use to create text:
this.add.text(100, 600, 'Test Text', {
font: '50px Poppins'
})
this.add.text(100, 600, 'Test Text', {
font: '50px Poppins semibold'
})
Here is the output:
The second image is using the default font, not Poppins. It seems that as soon as I try to set italic or any other style it will fallback to the default font.
I tried to set it with the properties as well (no luck). Has anyone faced the same issue (styling custom fonts), and how to properly load the styled custom fonts?

Issue:
semibold is not a valid font-weight. so it will be considered as font.
Solution:
this.add.text(100, 600, 'Test Text', {
font: '600 50px Poppins' // 600 equivalent to Semi Bold
})
https://developer.mozilla.org/en-US/docs/Web/CSS/font-weight

The problem was related to the async loading of the fonts from google. With webfontloader from google I can wait with the active event till they are ready.
import WebFont = require('webfontloader')
export class BootScene extends Phaser.Scene {
private ready: boolean = false
constructor() {
super({
key: 'BootScene'
})
}
async preload(): Promise < any > {
WebFont.load({
google: {
families: ['Poppins:600i,600,400', 'Inconsolata']
},
active: () => {
// This is required for asnyc loading
this.ready = true
}
})
}
// Launch game when all assets are loaded
update(): void {
if (this.load.isReady() && this.ready) {
this.scene.start('MainMenuScene')
}
}
}

How to add external JS scripts to VueJS Components?

I've to use two external scripts for the payment gateways.
Right now both are put in the index.html file.
However, I don't want to load these files at the beginning itself.
The payment gateway is needed only in when user open a specific component (using router-view).
Is there anyway to achieve this?
Thanks.

A simple and effective way to solve this, it's by adding your external script into the vue mounted() of your component. I will illustrate you with the Google Recaptcha script:
<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>
Source: https://medium.com/#lassiuosukainen/how-to-include-a-script-tag-on-a-vue-component-fe10940af9e8

I have downloaded some HTML template that comes with custom js files and jquery. I had to attach those js to my app. and continue with Vue.
Found this plugin, it's a clean way to add external scripts both via CDN and from static files
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")

using webpack and vue loader you can do something like this
it waits for the external script to load before creating the component, so globar vars etc are available in the component
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)
  })
}
},

UPDATE: This no longer works in Vue 3. You will receive this error:
VueCompilerError: Tags with side effect ( and ) are ignored in client component templates.
If you are trying to embed external js scripts to the vue.js component template, follow below:
I wanted to add a external JavaScript embed code to my component like this:
<template>
<div>
This is my component
<script src="https://badge.dimensions.ai/badge.js"></script>
</div>
<template>
And Vue showed me this error:
Templates should only be responsible for mapping the state to the UI. Avoid placing tags with side-effects in your templates, such as , as they will not be parsed.
The way I solved it was by adding type="application/javascript" (See this question to learn more about MIME type for js):
<script type="application/javascript" defer src="..."></script>
You may notice the defer attribute. If you want to learn more watch this video by Kyle

This can be simply done like this.
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);
});
}

You can use the vue-head package to add scripts, and other tags to the head of your vue component.
Its as simple as:
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 },
// ...
]
}
})
Check out this link for more examples.

With Vue 3, I use mejiamanuel57 answer with an additional check to ensure the script tag hasn't been loaded already.
mounted() {
const scripts = [
"js/script1.js",
"js/script2.js"
];
scripts.forEach(script => {
let tag = document.head.querySelector(`[src="${ script }"`);
if (!tag) {
tag = document.createElement("script");
tag.setAttribute("src", script);
tag.setAttribute("type", 'text/javascript');
document.head.appendChild(tag);
}
});
// ...

You can load the script you need with a promise based solution:
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) }
}
}
}
Please note that this.$root is a little hacky and you should use a vuex or eventHub solution for the global events instead.
You would make the above into a component and use it wherever needed, it will only load the script when used.
NOTE: This is a Vue 2.x based solution. Vue 3 has stopped supporting $on.

Are you using one of the Webpack starter templates for vue (https://github.com/vuejs-templates/webpack)? It already comes set up with vue-loader (https://github.com/vuejs/vue-loader). If you're not using a starter template, you have to set up webpack and vue-loader.
You can then import your scripts to the relevant (single file) components. Before that, you have toexport from your scripts what you want to import to your components.
ES6 import:
- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import
- http://exploringjs.com/es6/ch_modules.html
~Edit~
You can import from these wrappers:
- https://github.com/matfish2/vue-stripe
- https://github.com/khoanguyen96/vue-paypal-checkout

The top answer of create tag in mounted is good, but it has some problems: If you change your link multiple times, it will repeat create tag over and over.
So I created a script to resolve this, and you can delete the tag if you want.
It's very simple, but can save your time to create it by yourself.
// 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,
}
And you can use it like this:
// 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>
......

Simplest solution is to add the script in the index.html file of your vue-project
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>

The answer from mejiamanuel57 is great, but I want to add a couple of tips that work in my case (I spent some hours on them). First, I needed to use the "window" scope. Also, if you need to access any Vue element inside the "onload" function, you need a new variable for the "this" instance.
<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>
I worked with this on Vue 2.6. Here there is an explanation about how the trick "let self = this;" works in Javascript:
What does 'var that = this;' mean in JavaScript?

A fast and easy way that i found to do it is like this:
<template>
<div>Some HTML</div>
<component
src="https://unpkg.com/flowbite#1.5.3/dist/flowbite.js"
:is="'script'"
></component>
</template>

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() }
}

To keep clean components you can use mixins.
On your component import external mixin file.
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 (I include this, if any get stuck on import)
{
"presets":["#babel/preset-env"],
"plugins":[
[
"module-resolver", {
"root": ["./"],
alias : {
"#client": "./client",
"#JSassets": "./server/public",
}
}
]
}

If you're using Vue 3 and the Composition API (I highly recommend), and you're using <script> tags a lot, you can write a "composable" function for this:
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);
});
};
OR, if you are using VueUse (I also highly recommend), you can use their existing useScriptTag function.

You can use vue-loader and code your components in their own files (Single file components). This will allow you to include scripts and css on a component basis.

well, this is my practice in qiokian (a live2d anime figure vuejs component):
(below is from the file 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)
}
})
},
},
}

There is a vue component for this usecase
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>

If you are attempting to utilize a variable that is defined within a JavaScript file that is being loaded asynchronously and you receive an 'undefined' error, it is likely because the script has not yet finished loading. To resolve this issue, you can utilize the onload function to ensure that the script has completed loading before attempting to access the variable. As an example:
const script = document.createElement(...) // set attribute and so on...
script.onload = () => {
// do something with some variables/functions/logic from the loaded script
}

You can use the head property in vue to return a custom script
export default {
head: {
script: [{
src: 'https://cdn.polygraph.net/pg.js',
type: 'text/javascript'
}]
}
}

Google Webfonts: how to unload fonts after loading them?

Currently I can load a web font very easily using Google's Web Font loader:
WebFont.load({
google: {
families: ['Bree Serif']
}
});
However, is it possible to later unload the fonts and added elements from the DOM so they're no longer used on the page?
The documentation on the project's Github doesn't show any options or methods that offer the functionality.

You can simply use a MutationObserver to keep track of the changes made to the DOM and remove the added elements when you so desire.
Below is a simple sample implementation:
(function() {
"use strict";
var addedNodes = [];
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
Array.prototype.forEach.call(mutation.addedNodes, function(node) {
addedNodes.push(node);
});
});
observer.disconnect();
});
loader.addEventListener('click', function() {
observer.observe(document, {
childList: true,
subtree: true,
addedNodes: true
});
//Two loads simply to demonstrate that's not a problem
WebFont.load({
google: {
families: ['Bree Serif']
}
});
WebFont.load({
google: {
families: ['Indie Flower']
}
});
loader.disabled = true;
remover.disabled = false;
});
remover.addEventListener('click', function() {
addedNodes.forEach(function(node) {
node.remove();
});
addedNodes = [];
loader.disabled = false;
remover.disabled = true;
});
}());
body {
text-align: center;
background: aliceblue;
}
h1 {
font-family: 'Indie Flower';
font-size: 3em;
color: cadetblue;
}
p {
font-family: 'Bree Serif';
color: crimson;
}
input[disabled] {
display: none;
}
<script src="//ajax.googleapis.com/ajax/libs/webfont/1.5.10/webfont.js"></script>
<input id="loader" type="button" value="Click to load webfonts" />
<input id="remover" type="button" value="Remove loaded webfonts" disabled="true" />
<h1>Chapter 1</h1>
<p>Grumpy wizards make toxic brew for the evil Queen and Jack.</p>

Can I use CKEditor without a toolbar?

(Possible duplicate: CKEditor - No toolbars)
I'd like to create a CKEditor instance without a toolbar. I tried defining an empty toolbar to use in the instance's config
oConfigName.toolbar = 'Custom';
oConfigName.toolbar_Custom = [];
but I get a small empty toolbar by my instance, instead of no toolbar.
I am using inline editing with CKEditor4.

Wow :) This is something that we haven't thought of while implementing toolbar. But I've just checked that you can remove toolbar plugin, because it isn't required by any other plugin.
So build your own CKEditor package without toolbar or use removePlugins configuration - e.g.:
var editor = CKEDITOR.inline( 'editable', {
removePlugins: 'toolbar'
} );
Update: In CKEditor 4.1 the Advanced Content Filter was introduced. In its automatic mode it is configured by buttons which are loaded to toolbar. Without toolbar plugin ACF is not configured, so one need to do this on his own:
var editor = CKEDITOR.inline( 'editable', {
removePlugins: 'toolbar',
allowedContent: 'p h1 h2 strong em; a[!href]; img[!src,width,height];'
} );

In CKEditor 4.9.2:
When you instanciate the editor, set toolbar option:
CKEDITOR.replace( 'editor1', {
...
toolbar: []
});

I do this in ckeditor5:
ClassicEditor
.create( document.querySelector( '.editor' ), {
licenseKey: '',
toolbar: [],
} )
.then( editor => {
window.editor = editor;
editor.isReadOnly = true;
} )
.catch( error => {
console.error( 'Oops, something went wrong!' );
console.error( 'Please, report the following error on https://github.com/ckeditor/ckeditor5/issues with the build id and the error stack trace:' );
console.warn( 'Build id: efxy8wt6qchd-qhxgzg9ulnyo' );
console.error( error );
} );
if you want to remove border around ckeditor 5 do this:
<style>
.ck{
border:0px !important;
}
</style>

I've turned off everything except italics, bold and underlined with this config:
CKEDITOR.editorConfig = function( config ) {
config.autoParagraph = false;
config.toolbarGroups = [
{ name: 'basicstyles', groups: [ 'basicstyles', 'cleanup' ] },
];
config.removeButtons = 'Strike,Subscript,Superscript,RemoveFormat';
};

There are two ways I have seen:
1) Using the removePlugins option and just remove the toolbar:
CKEDITOR.inline( 'textarea', {
removePlugins: 'toolbar',
allowedContent: 'p h1 h2 strong em; a[!href]; img[!src,width,height];'
} );
2) Using CSS - Not the standard approach: (little tricky)
Just make css to display:none the toolbar, like
.cke_inner {
display: none;
}
In version 4.13, you can hide the entire top bar containing the toolbar:
.cke_inner .cke_top {
display: none;
}
or hide only the toolbar but keep a strip of color at the top:
.cke_inner .cke_top .cke_toolbox {
display: none;
}
Hope it will help someone.

Add this this line in to config.js file
config.removePlugins= 'toolbar'

I have added new function into my project for hide/show of the toolbar.
function onClickToolbarButton() {
var bar = document.getElementById("cke_1_top");
if(bar.style.display == "none"){
bar.style.display = "block";
}else{
bar.style.display = "none";
}
//resize web page
//onresize();
}
Call this function every time, if you want hide/show toolbar.

In CKEditor 5 the easiest way without changing configuration or editor behaviour is to hide the toolbar using CSS:
.ck.ck-editor__top {
display: none;
}

Try display: none using CSS with their ids or their class:
Example:
#cke_19, #cke_18, #cke_22, #cke_46, #cke_45 {
display:none;
}
#cke_45 is for link and #cke_46 for unlink
To turn them off one by one

More correct way in CKEditor 5:
editor.ui.view.panel.element.setAttribute('style', 'display:none');

I would suggest looking at official documentation when using CKEditor 5. It covers hiding toolbar especialy when using read-only mode.
ClassicEditor
.create( document.querySelector( '#editor' ), {
// ...
} )
.then( editor => {
const toolbarElement = editor.ui.view.toolbar.element;
editor.on( 'change:isReadOnly', ( evt, propertyName, isReadOnly ) => {
if ( isReadOnly ) {
toolbarElement.style.display = 'none';
} else {
toolbarElement.style.display = 'flex';
}
} );
} )
.catch( error => {
console.log( error );
} );