angularJS forEach的条件

Question

Is it possible to apply a WHERE condition in an angularJS forEach loop?

angular.forEach(i.menu_modifier_groups, function(group) {
    var count = 0;
    angular.forEach(group.menu_modifier_items, function(item) {
        count += item.selected ? 1 : 0;
    });
    if (count == group.max_selection_points) {
        IsAllSelected = true;
    } else {
        //if one item failed All select do return false
        IsAllSelected = false;
    }
});

I want to apply a WHERE condition to tell angular the items to loop through.

i.menu_modifier_groups WHERE group.min_selection_points > 0 for example.

Thanks.

Answer 1

You can use filter to get filtered data. Ie like I .menu_modifier_groups.filter ( function...)

Please find below a small working example.

var arr = [];

var obj = {x: 54, y: 10};
arr.push(obj);
var obj1 = {x: 14, y: 10};
arr.push(obj1);

var finalAccrualRows = arr.filter(function (object) {
                        return object.x===54?false:true;
                    });
alert(finalAccrualRows.length);

So for your case it would be like

var finalGroups = i.menu_modifier_groups.filter(function (group) {
return (group.min_selection_points > 0)?true:false;
});

It is simply a list.filter() function to filter the list, Hope this should help you.