js reduce()函数处理对象Object,对象属性求和

//reduce方法处理对象，对象的属性求和
                var resultObject = [{subject: 'zhaoqian',score: 98},
                                {subject: 'sunli',score: 90},
                                {subject: 'zhouwu',score: 79}];
                var totalScore=resultObject.reduce(function (pre,cur) {
                    return pre+cur.score;
                },0);
                console.log(totalScore);