LINQ for Javascript (JSON,Arrays, DOM)?

Question

Hi there,

i am looking for some input for how to use linq with javascript, there are number of implementations for javascript around.

anybody use any and which is the most compatible?

I was looking to be able to use linq against JSON and the DOM

Thanks in advance

Answer 1

A LINQ-like library for JavaScript is JSLINQ. It seems to have quite a full implementation.

Example from site:

var myList = [
        {FirstName:"Chris",LastName:"Pearson"},
        {FirstName:"Kate",LastName:"Johnson"},
        {FirstName:"Josh",LastName:"Sutherland"},
        {FirstName:"John",LastName:"Ronald"},
        {FirstName:"Steve",LastName:"Pinkerton"}
        ];

var exampleArray = JSLINQ(myList)
                   .Where(function(item){ return item.FirstName == "Chris"; })
                   .OrderBy(function(item) { return item.FirstName; })
                   .Select(function(item){ return item.FirstName; });

This should be fine for JSON - as JSON is basically just objects. The DOM, while workable, might be a bit more clunky; you'd probably be best using something else.

Answer 2

JavaScript libraries such as jQuery have methods that work on enumerables and provide filtering, projecting, etc like LINQ does. For example, the jQuery.grep() method works just like LINQ's Where() by filtering items according to the given (anonymous) function and jQuery.map() projects items like LINQ's Select().