searchObjects.js

/** 
* Search through an array of objects. 
* 
* @param {Object} One or more key/value pairs that must exist 
* in each object for it to be included in the result. 
* @return {Array} Objects that match the search criteria.
*/ 
Array.prototype.searchObjects = function (params) { 
    if (typeof params !== 'object') {
       throw new TypeError("Must provide search parameters in object form.");
    }
    return this.filter(function (el) {
        if (typeof el === 'object') {
            for (var key in params) {
                if (el[key] && el[key] == params[key]) {
                    return true; 
                }
            }
        }
        return false; 
    });
}; 
 
// Example:
var rappers = [
    {name: "Lil' Wayne", adjective: "Crazy"}, 
    {name: "Big Poppa", adjective: "Hefty"},
    {name: "Jay-Z", adjective: "Rich"}
]; 
var result = rappers.searchObjects({adjective: "Hefty"});

// result = {name: "Big Poppa", adjective: "Hefty"}