Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Improve performance for big Select

See original GitHub issue

I used your plugin for select with many items (~3000). Its works but take ~3mins to render with many FF warning about endless loop.

I did some modification and now it take ~6secs. The idea is first to prepare all items before adding them to DOM.


                optgroupLiTemplate = '<li class="ms-optgroup-label"><span></span></li>',
                containers = {};

                ms.find('optgroup, option').each(function(){

                        ....
                        /*
                        if (optgroupId){
                            that.$selectableUl.children('#'+optgroupId+'-selectable').find('ul').first().append(selectableLi);
                            that.$selectionUl.children('#'+optgroupId+'-selection').find('ul').first().append(selectedLi);
                        } else {
                            that.$selectableUl.append(selectableLi);
                            that.$selectionUl.append(selectedLi);
                        }
                        */

                        var container = optgroupId || 'main';
                        if(!containers[container]){
                            containers[container] = [[],[]];
                        }
                        containers[container][0].push(selectableLi);
                        containers[container][1].push(selectedLi);
                    }
                });
                for(var id in containers){
                    if (id !== 'main'){
                        that.$selectableUl.children('#'+id+'-selectable').find('ul').first().append(containers[id][0]);
                        that.$selectionUl.children('#'+id+'-selection').find('ul').first().append(containers[id][1]);
                    } else {
                        that.$selectableUl.append(containers[id][0]);
                        that.$selectionUl.append(containers[id][1]);
                    }
                }