How to get Id from URL in LWC

This post explains how to get Id from URL in LWC.

getParametersFromURL.html :

<template>

    <div class="slds-p-around_medium lgc-bg">

            <lightning-input type="text" label="Url " value={urlId} disabled="true"></lightning-input>

    </div>

</template>

getParametersFromURL.js :

import { LightningElement, track} from 'lwc';

export default class getParametersFromURL extends LightningElement {

    @track urlId;

    connectedCallback() {

        var urlParameters = window.location.href;

        var urlStateParameters = urlParameters.split('Opportunity/');

        var urlIDValue = urlStateParameters[1];

        urlIDValue = urlIDValue.split('/');

        this.urlId = urlIDValue[0];

    }

}

Thanks, 
Lovesalesforceyes