根据对象属性对数组进行排序

关键在于arr.sort()方法

//升序function sortBy(propertyName) {    return function(obj1,obj2) {        var val1 = obj1.propertyName;        var val2 = obj2.propertyName;        return val1 - val2;    }}var data = [{name: "Zachary"age: 28}{name: "Nicholas"age: 29}]; data.sort(sortBy('age'));