如何基于JavaScript中的多个条件过滤JSON数据？

Question

I am trying to filter out all records that don't contain values from the 5 arrays: ssn, spn, smft, ssl, svtv. The output is not correct because it only works in cases where the lists contain 1 element. The output array becomes empty when they contain multiple elements. I am trying to get records that don't contain one of the values from each list (OR). I think it doesn't work because it checks if each record doesn't contain all values in each list (AND). Any idea how to fix this?

jsonData

[{"sn": "234234234", "pn": "1014143", "mft": "hello world", "sl": "GG07", "vtv": "Yes"},{"sn": "324234234", "pn": "101423131143", "mft": "hello world 1", "sl": "GG08", "vtv": "Yes"}]

query

ssn: ['T234834U', 'T23423423'],
spn: ['1014114', '21412342'],
smft: ['Sbasdfa', 'asdfaser'],
ssl: ['BB03', 'SFD04'],
svtv: ['Yes']

Code

function getFiltered() {    
    var query = {
        sn: ssn, 
        pn: spn,
        mft: smft,
        sl: ssl,
        vtv: svtv
    }    
    var filtered = find_in_object(jsonData, query)
}

function find_in_object(my_object, my_criteria) {
    return my_object.filter(function(obj) {
        return Object.keys(my_criteria).every(function(c) {
            return JSON.stringify(obj[c]).indexOf(my_criteria[c]) === -1
        })
    })
}

Answer 1

You can use every for AND and some for OR . In your case you want to go thru the list of keys (so every for AND ) and then check if the value exists in the search array. indexOf should do the job:

 let jsonData = [ {"sn": "234234234", "pn": "1014143", "mft": "hello world", "sl": "GG07", "vtv": "Yes"}, {"sn": "324234234", "pn": "101423131143", "mft": "hello world 1", "sl": "GG08", "vtv": "Yes"} ] let query = { mft: [], sl: ["GG08"], vtv: ["No"] } console.log(find_in_object(jsonData, query)); //returns one let query2 = { sn: ['T234834U', 'T23423423'], pn: ['1014114', '21412342'], mft: ['Sbasdfa', 'asdfaser'], sl: ['BB03', 'SFD04'], vtv: ['Yes'] } console.log(find_in_object(jsonData, query2)); //returns none function find_in_object(my_array, my_criteria) { return my_array.filter(function(obj) { return Object.keys(my_criteria).every(function(key) { return (Array.isArray(my_criteria[key]) && (my_criteria[key].some(function(criteria) { return (typeof obj[key] === 'string' && obj[key].indexOf(criteria) === -1) })) || my_criteria[key].length === 0); }); }); } 

Edited to cover some edge cases.

Answer 2

I would turn the json object in an array and then make a simple string comparison to each key.

$(document).ready(function() {
    var data = [{"mft": "hello world", "pn": "1014143", "vtv": "Yes", "pn": "T1323F2342", "sl": "GG07"},{"mft": "hello 1", "pn": "234234", "vtv": "Yes", "pn": "T252345234", "sl": "SDF87"}];


    filterData(data[0]);
});


function filterData(data) {
    var newArray = [];
     for (var key in data) {
        var value   = data[key];
        console.log(key, value);

        if (key==="ssn" || key==="spn" || key==="smft"|| key==="ssl"|| key==="svtv") {
            var object  = {key:value};
            newArray.push(object)
        }
    }
    return newArray;
}

Answer 3

Something like this should work

function find_in_object(data, query) {
  return data.filter(function(record) { 
    for(var i in record) {
      if(query[i] && query[i].indexOf(record[i]) !== -1) {
        return false;
      }
    }
    return true;
  });
}

However it is not clear whether you want to match a complete key and value pair, or just a single value regardless of it's key. The above will only work if the key AND the value match.