Simple function to check for a partial key in an Array

This is a simple loop to check for a partial key in an Array

/**
 * Extend the Array object
 * @param searchValue is the string to search for
 * @returns Returns all matches
*/
 

Array.prototype.searchFor = function(searchValue) {

   
 var pattern = new RegExp('^'+searchValue+'');

 var matches = [];

 
 for (var key in this) {        
  if (pattern.test(key)) {

    matches.push(key);          
  }                     
 }

 return matches;


};

 

Use it like this

var searchValue = "checkForMe";


var searchArray = [];


var matches = searchArray.searchFor(searchValue);

I am using something similar to look though a huge word/key index and output matching keys that link to a Data object.

Enjoy coding …