JS过滤后台获取的原始数据

Question

后台获取到的ajax的JSON数组，原始数据 [{"CostTime": "310", "FromStation": "上海"},{"CostTime": "336", "FromStation": "北京"},{"CostTime": "310", "FromStation": "上海"},{"CostTime": "336", "FromStation": "北京"},{"CostTime": "310", "FromStation": "上海"},{"CostTime": "336", "FromStation": "北京"},{"CostTime": "310", "FromStation": "上海"},{"CostTime": "336", "FromStation": "北京"},{"CostTime": "310", "FromStation": "上海"},{"CostTime": "310", "FromStation": "上海"},{"CostTime": "336", "FromStation": "北京"}]把FromStation为北京的数据过滤后生成新的数据[{"CostTime": "336", "FromStation": "北京"},{"CostTime": "336", "FromStation": "北京"},{"CostTime": "336", "FromStation": "北京"},{"CostTime": "336", "FromStation": "北京"},{"CostTime": "336", "FromStation": "北京"}]用JS或者JQ过滤具体方式是怎么样的。谢谢各位大牛指点下！

Answer 1

nArr = json.filter((item) => {

   return item.FromStation == '北京'

})

Answer 2

`var sourceData = [

{"CostTime": "310", "FromStation": "上海"},

{"CostTime": "336", "FromStation": "北京"},

{"CostTime": "310", "FromStation": "上海"},

{"CostTime": "336", "FromStation": "北京"},

{"CostTime": "310", "FromStation": "上海"},

{"CostTime": "336", "FromStation": "北京"},

{"CostTime": "310", "FromStation": "上海"},

{"CostTime": "336", "FromStation": "北京"},

{"CostTime": "310", "FromStation": "上海"},

{"CostTime": "310", "FromStation": "上海"},

{"CostTime": "336", "FromStation": "北京"}

];

var currentData = sourceData.filter(x => {

return x.FromStation === '北京';

});

console.log(currentData); // 你要的结果

`

Answer 3

es6采用楼上的方法；

es5写法：

nArr = json.filter(function(item){

    return item.FromStation === '北京';

});

不过建议做下简单的方法封装，将过滤关键词作为变量传入方便随时更换关键词

function filterKey(key){

    return json.filter(function(item){

        return item.FromStation === key;

    })

}