Create Account Using Apex Controller in Salesforce Lightning Web Component (LWC)

accountCreationLwc.html [Lightning Web Component]

   <template>
    <lightning-card>
       <h3 slot="title">
           <lightning-icon icon-name="standard:account" size="small"></lightning-icon> Account Creation Using Apex Controller           
       </h3>
<p class="slds-p-horizontal_small">
<lightning-input type="text" label="Account Name" value={accountRecord.Name} onchange={handleNameChange}></lightning-input>
        </p>
<p class="slds-p-horizontal_small">
<lightning-input type="text" label="Type" value={accountRecord.Type} onchange={handleTypeChange}></lightning-input>
        </p>
<p class="slds-p-horizontal_small">
<lightning-input type="text" label="Phone" value={accountRecord.Phone} onchange={handlePhoneChange}></lightning-input>
        </p>
<br/>
        <div slot="footer">
            <lightning-button label="Create Account" onclick={handleSaveAccount} variant="brand"></lightning-button>
        </div>
</lightning-card> 
  </template>

accountCreationLwc.js [JavaScript File]

   import { LightningElement, track } from 'lwc';
import createAccount from '@salesforce/apex/accountCreationControllerLwc.createAccount';
import ACCOUNT_NAME from '@salesforce/schema/Account.Name';
import ACCOUNT_TYPE from '@salesforce/schema/Account.Type';
import ACCOUNT_PHONE from '@salesforce/schema/Account.Phone';
import {ShowToastEvent} from 'lightning/platformShowToastEvent';

export default class AccountCreationLwc extends LightningElement {
@track accountid;
@track error;    
@track accountRecord={
    Name:ACCOUNT_NAME,
    Type:ACCOUNT_TYPE,
    Phone:ACCOUNT_PHONE
};

handleNameChange(event){
   this.accountRecord.Name = event.target.value;
   //window.console.log(this.accountRecord.Name);
 }

 handleTypeChange(event){
    this.accountRecord.Type = event.target.value;
    //window.console.log(this.accountRecord.Type);
  }

  handlePhoneChange(event){
    this.accountRecord.Phone = event.target.value;
    //window.console.log(this.accountRecord.Phone);
  }

  handleSaveAccount(){
    window.console.log('before save' + this.createAccount);
    createAccount({accountRecObj:this.accountRecord})
    .then(result=>{
      window.console.log(this.createAccount);
        this.accountRecord={};
        this.accountid=result.Id;
        window.console.log('after save' + this.accountid);
        
        const toastEvent = new ShowToastEvent({
          title:'Success!',
          message:'Account Record is created successfully',
          variant:'success'
        });
        this.dispatchEvent(toastEvent);
    })
    .catch(error=>{
       this.error=error.message;
       window.console.log(this.error);
    });
  }


}

accountCreationLwc.js-meta.xml [MetaData File]
accountCreationControllerLwc.cls [Apex Controller File]

To know more live demo in LWC, Use this link..