JSFiddle - React, Tailwind, and code Playground
HTML
<script type='text/javascript'>
var names_arr = ['sonarika','yogesh','sumit','sonarika','vijay','anil'];
function checkValue(value,arr){
var status = 'Not exist';
for(var i=0; i<arr.length; i++){
var name = arr[i];
if(name == value){
status = 'Exist';
break;
}
}
return status;
}
console.log('status : ' + checkValue('sonarika', names_arr) );
console.log('status : ' + checkValue('mayank', names_arr) );
</script>