jQuery-linqHelpers - Helper functions from linq.

jQuery-linqHelpers.js

/* Author: 
    Jacob Gable, http://jacob4u2.posterous.com
   License: 
    MS-PL
*/

jQuery.any = function (collection, compareFunc) {
    if (!$.isArray(collection) || !$.isFunction(compareFunc)) {
        return false;
    }
    for (var i = 0; i < collection.length; i++) {
        if (compareFunc(collection[i], i)) {
            return true;
        }
    }

    return false;
};

jQuery.first = function (collection, compareFunc) {
    if (!$.isArray(collection) || !$.isFunction(compareFunc)) {
        return null;
    }
    for (var i = 0; i < collection.length; i++) {
        if (compareFunc(collection[i], i)) {
            return collection[i];
        }
    }

    return null;
};

// Returns a flat list of array elements (concat'ed together)
jQuery.mapMany = function (collection, aggregateFunc) {
    if (!$.isArray(collection) || !$.isFunction(aggregateFunc)) {
        return [];
    }
    var many = [];
    $.each($.map(collection, aggregateFunc), function (i, eachEl) {        
        many = many.concat(eachEl);        
    });

    return many;
};

jQuery.postJson = function (url, data, successCallback, errorCallback) {
    $.ajax({
        type: "POST",
        url: url,
        data: JSON.stringify(data),
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: successCallback,
        error: errorCallback
    });
};