• starts with W200
• can be different length
• can be followed by a space, comma, other character (not a number) or nothing

<template>
    <lightning-card  title="Age Calculator">
        <lightning-button variant="brand" label="Calculate"  slot="actions" onclick={calculateDOB}></lightning-button>
        <p class="slds-p-horizontal_small">
            <lightning-input type="date" name="BirthDate" label="Enter Your Date Of Birth" placeholder="type here..." value={birthdate} onchange= {handleChangeNum1}></lightning-input>
            result---{result}
        </p>
    </lightning-card>
</template>

export default class AgeCalculator extends LightningElement {
    @track result;
    @track birthdate;
    today = new Date();


    handleChangeNum1(event){
        const inpurdate = event.target.name;
        const inputvalue= event.target.value;
        if(inpurdate=='BirthDate'){
            this.birthdate=inputvalue;
        }

    }
    calculateDOB (event) {

        this.result=today.getfullyear-this.birthdate.getfullyear;
    }
}

List<User> usrlst = [SELECT Id FROM User WHERE UserRole.DeveloperName LIKE : '%Customer_Support_Rep%' and IsActive = True];

<button class="btn-view-all" onclick="openall()">View All   </button>

function openannouncement(){
            var urlString=window.location.href;
            var baseURL = urlString.substring(0, urlString.indexOf("/_ui"));
            var siteBaseURL = baseURL + '/s';
            var redirectUrl = siteBaseURL + '/viewall'
            window.open(redirectUrl,"_self");
         }