Question

Is there a nice way to loop on only the first 3 items of a json object using the jquery each loop?

I am thinking of an equivalent of the .slice(start,end) function.

var data = [ 
 {"Id": 10004, "PageName": "club"}, 
 {"Id": 10040, "PageName": "qaz"}, 
 {"Id": 10059, "PageName": "ee"}, 
 {"Id": 10089, "PageName": "dd"}, 
 {"Id": 10095, "PageName": "hh"}
];

$.each(data, function(i, item) {
    alert(item.PageName);
    // somehow break at item 3
});​

Answer 1

var data = [ 
 {"Id": 10004, "PageName": "club"}, 
 {"Id": 10040, "PageName": "qaz"}, 
 {"Id": 10059, "PageName": "ee"}, 
 {"Id": 10089, "PageName": "dd"}, 
 {"Id": 10095, "PageName": "hh"}
];

$.each(data, function(i, item) {
    alert(item.PageName);
    return i<2;
});​

each stops when you return false.

From the docs:

We can break the $.each() loop at a particular iteration by making the
callback function return false. Returning non-false is the same as a
continue statement in a for loop; it will skip immediately to the next
iteration.