JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<input id="phone" type="text" />

JavaScript

$(document).ready(function(){
	var regExp = /^01[5-7][1-9]-[0-9]{3}-[0-9]{4}/;
  		
  console.log()    
  $('#phone').focusout(function(){
    var text = $('#phone').val();   
    if(!regExp.test(text)){
    	alert('not a valid phone number');
    }
  });
});