jquery 数组去重,排序高效方法

function unique(arr) {

            var result = [], hash = {};

            for (var i = 0, elem; (elem = arr[i]) != null; i++) {

                if (!hash[elem]) {

                    result.push(elem);

                    hash[elem] = true;

                }

            }

            return result;

        }

 

先合并,后去重

$data.markTeachers = $.merge($data.tempSaveTeachers, $data.markTeachers);

                //去重复

                for (var i = 0; i < $data.markTeachers.length; i++) {

                    for (var j = i + 1; j < $data.markTeachers.length; j++) {

                        if ($data.markTeachers[i].userId === $data.markTeachers[j].userId) {

                            $data.markTeachers.splice(i, 1);

                            i--;

                            break;

                        }

                    }

                }

 

 

titleCard.sort(function (aEl, bEl) {

                    var al = $(aEl).find('.progress').next('span').text().split('%')[0];

                    var bl = $(bEl).find('.progress').next('span').text().split('%')[0];

                    if (parseInt(al) > parseInt(bl)){

                        return -1;

                    }else{

                        return 1;

                    }

                });

                $('.title-cards').html(titleCard);

 

 

es6去重

 

[...new Set(arr)]