对从 JSon 数组填充的 JQuery 列表进行排序

Question

I tried many different methods but can't seem to work this one out. I have a JSon array which populates my JQuery list. The list displays correctly, but I cant seem to be able to filter it.

I'd like to be able to filter by name or price. I tried the JQuery.Filter method and many others, and they all failed. I'd also like to make it as a link. ( The user clicks sort by name, and it sorts... )

Heres what I have so far, which I was convinced would work.

Any help is greatly appreciated, Thanks !

.js file:

// Json array var productList = {"products": [ {"description": "Product 1", "price": "3.25"}, {"description": "Product 4", "price": "9.97"}, {"description": "Product 3", "price": "4.21"}, {"description": "Product 2", "price": "5.24"}, {"description": "Product 5", "price": "8.52"} ] };

function loadList() {

var list = $("#productList").listview();


// load array into list

$(productList.products).each(function(index) {
    $(list).append('<li id="listitem">' + this.description + "  " +
            "    :     " + this.price + '</li>');

     // sort by price 
     $(productList.products).filter(function ()
     { return parseFloat(this.price) < 11;})


});

    $(list).listview("refresh");

}

Answer 1

How about this for sorting :

var prods = productList.products.sort(function(a, b) {return parseInt(a.price) < parseInt(b.price);});
$.each(prods, function() {
    list.append("<li>" + this.description + " : " + this.price + "</li>");
});

To sort by description, you could use this instead:

var prods = productList.products.sort(function(a, b) {return a.description < b.description;});

If you just want to filter , you could substitute:

var prods = productList.products.filter(function(item) {return parseInt(item.price) < 5;});

Answer 2

This sort of filtering is typically best done on the server-side end of things. Have you tried applying the filtering at the DB or application-levels?

Answer 3

There have been a lot of json path (xpath like) tools popping up for this kind of purpose. Check out http://goessner.net/articles/JsonPath/