Are you using "" or '' in javascript?

Are you using ; or none at the end of line?

Let's see how to use it in open source.

1.jQuery

using : "" and ;

API example

https://jquery.com/

$.ajax({
url: "/api/getWeather",
data: {
zipcode: 97201
},
success: function( result ) {
$( "#weather-temp" ).html( "" + result + " degrees" );
}
});

Code example

https://github.com/jquery/jquery/blob/main/src/core/ready.js

if ( document.readyState !== "loading" ) {
window.setTimeout( jQuery.ready );
}

2.bootstrap

using : '' and none

Code example

https://github.com/twbs/bootstrap/blob/main/js/src/button.js

const NAME = 'button'
const DATA_KEY = 'bs.button'
const EVENT_KEY = .${DATA_KEY}
const DATA_API_KEY = '.data-api'

3.angular

using : '' and ;

https://github.com/angular/angular/blob/main/packages/core/src/application_tokens.ts

export const PLATFORM_ID = new InjectionToken('Platform ID', {
providedIn: 'platform',
factory: () => 'unknown', // set a default platform name, when none set explicitly
});

4.vue

using : '' and none

https://github.com/vuejs/vue/blob/main/src/core/components/keep-alive.ts

function matches(
pattern: string | RegExp | Array,
name: string
): boolean {
if (isArray(pattern)) {
return pattern.indexOf(name) > -1
} else if (typeof pattern === 'string') {
return pattern.split(',').indexOf(name) > -1
} else if (isRegExp(pattern)) {
return pattern.test(name)
}
return false
}

5.react

using : '' and ;

https://github.com/facebook/react/blob/main/packages/react-dom/src/client/ReactDOM.js

function createPortal(
children: ReactNodeList,
container: Element | DocumentFragment,
key: ?string = null,
): React$Portal {
if (!isValidContainer(container)) {
throw new Error('Target container is not a DOM element.');
}
return createPortalImpl(children, container, null, key);
}