Check if a string is an URI.

is-uri.js

;(function(obj) {
  
  'use strict';
  
  /*
 * @name: isURL
 * @description: Checks if a String is an URI
 *
 * @param String : The string to be checked
 */ 
  function isURI(string) {
    
    // Set a variable name that will be 
    // defined when the operation return true
    let result;
    
    
    // Set an array of URI References
    let uriRefs = [
     'https://',
     'http://',
     'ftp://',
     'data:'
    ];
   
    
    // Maps the `uriRefs` array and call a function
    // passing as an argument it's values.
    // Then do a verification that checks if 
    // the value of the `string` argument includes an item of the
    // `uriRefs` array. If is true, define the `result` to be true;
    uriRefs.map(ref => {
      if (string.includes(ref)) result = true;
    });
    
    
    // Return the `result` with a `true` or `false` value
    return result;
  }
  
  obj.isURI = isURI;

}(window));