javascript - 使用 Meteor 中的事件从数组中检索元素

Question

我正在“类别”函数中获取 [object, object] 而不是数组中的元素。虽然我不确定，但这也许是预料之中的，而我只是弄错了。

if (Meteor.isClient) {

    Template.ipsosboard.helpers({
         'categories': function() {
        return array; // Some data stored as JS Object in lib.
    },
        'currentElement': function() {
            return Session.get('selectedEvent');
        }
    });

    Template.ipsosboard.events({
        "change #category-select": function(event, template) {
            var selectedEvent = $(event.currentTarget).val();
            Session.set('selectedEvent', selectedEvent);
            console.log("EventNum: " + selectedEvent);
        }
    });

}; //end of client code.

if (Meteor.isServer) {
    //code to run by server here.
};

Answer 1

这似乎解决了这个问题。它需要将对象转换为数组。注意:“data”是一个json文件，作为JS对象存储在项目的lib文件夹中，因此我需要对其进行转换。

if (Meteor.isClient) {

    Template.ipsosboard.helpers({
         'categories': function() {

It needed to be converted to array using the function below.

        var myObj = data;
        var array = $.map(myObj, function(value, index) {
            return value;
        });
        return array;
    },

So now it returns the data as required.

        'currentElement': function() {
            return Session.get('selectedEvent');
        }
    });

    Template.ipsosboard.events({
        "change #category-select": function(event, template) {
            var selectedEvent = $(event.currentTarget).val();
            Session.set('selectedEvent', selectedEvent);
            console.log("EventNum: " + selectedEvent);
        }
    });

}; //end of client code.

if (Meteor.isServer) {
    //code to run by server here.
};