I'm using vis-js timeline library for building a timeline.
I need to sort the elements in each group.
Groups are like in example here.
I saw that I can do this using the "order
option in the item" like here
but I cannot understand how it works.
I tried this way:
var groups = new vis.DataSet([
{id: 0, content: 'First', value: 1},
{id: 1, content: 'Third', value: 3},
{id: 2, content: 'Second', value: 2}
]);
// create a dataset with items
var items = new vis.DataSet([
{id: 0, group: 0, content: 'item 0', start: new Date(2014, 3, 17), end: new Date(2014, 3, 21)},
{id: 1, group: 0, content: 'item 1', start: new Date(2014, 3, 19), end: new Date(2014, 3, 20)},
{id: 2, group: 1, content: 'item 2', start: new Date(2014, 3, 16), end: new Date(2014, 3, 24)},
{id: 3, group: 1, content: 'item 3', start: new Date(2014, 3, 23), end: new Date(2014, 3, 24)},
{id: 4, group: 1, content: 'item 4', start: new Date(2014, 3, 22), end: new Date(2014, 3, 26)},
{id: 5, group: 2, content: 'item 5', start: new Date(2014, 3, 24), end: new Date(2014, 3, 27)}
]);
// create visualization
var container = document.getElementById('visualization');
var options = {
editable: true
};
var timeline = new vis.Timeline(container);
timeline.setOptions(options);
timeline.setGroups(groups);
var temp = items.get({
order:function(a,b){
return b.id-a.id;
if(a.id > b.id)
return -1;
if(a.id < b.id)
return 1;
return 0;
},
});
timeline.setItems(temp);
Variable temp
contains an array which was sorted, but when timeline is create - in third group items sorted like: item3
, item2
, item4
.
But they have to sorted like item2
, item3
, item4
.