javascript - 使用 underscore.js 按年份过滤

Question

我有一个传单交互式 map ，我想按年份过滤掉 geojson 数据。我想使用 underscore.js 来过滤。有问题的字段是“info_city”，其中包含年份条目。我的过滤函数如下:

function filterByYear(data){
    console.log("filtering")
    console.log(data)
    f = _.where(data, {info_date : "2006"}); 
    console.log(f) 
    return f;
}

这是我的 geojson 的设置方式:

{
  "type": "Feature",
  "properties": {
    "info_address": "Insitut fur Rontgendiagnostik, Universitatsklinikum Wurzburg, Oberdurrbacher Str 6",
    "info_city": "Wuerzburg",
    "info_state": "Germany",
    "info_zip": 97080,
    "info_country": "",
    "info_notes": "Unsure of how to format the German address",
    "info_lastName": "Bley",
    "info_maidenName": "",
    "info_firstName": "Thorsten",
    "info_middleName": "",
    "info_intern": "",
    "info_resident": "",
    "info_fellow": "",
    "info_fellowshipSection": "",
    "info_honoraryFellow": "",
    "info_formerFaculty": "fac",
    "info_facultySection": "Thoracic Imaging",
    "info_residencyBegin": "",
    "info_residencyEnd": "",
    "info_fellowshipBegin": "",
    "info_fellowshipEnd": "",
    "info_institution": "",
    "info_position": "Visiting faculty",
    "info_count": 1,
    "info_resDate": 1900,
    "info_felDate": 1900,
    "info_date": 2009,
    "info_status": "fac"
  },

underscore.js 应该自动读取“info_date”作为字段之一吗？或者，我是否需要做一些准备并将 info_date 字段隔离为变量？

Answer 1

info_date 是一个数字，而不是一个字符串改变

f = _.where(data, {info_date : "2006"}); 

由

f = _.where(data, {info_date : 2006});