js中对象数组按对象属性排序

var arr = [{
            data: 21,
            weather:'晴'
        }, {
            data: 111,
            weather:'小雨'
        }, {
            data: 32,
            weather:'大雨'
        }, {
            data: 2,
            weather:'小雨'
        }, {
            data: 2,
            weather:'阴'
        }, {
            data: 212,
            weather:'雪'
        }]

function sortData(a, b) {
return b.data - a.data
}
arr.sort(sortData);
console.log(arr);

tip:若是想要从小到大的顺序能够把方法中a和b的位置互换一下。web

function sortData(a, b) {
            return a.data - b.data
        }